path: root/contrib/snowball/algorithms/greek.sbl

// A stemmer for Modern Greek language, based on:
//
// Ntais, Georgios. Development of a Stemmer for the Greek
// Language. Diss. Royal Institute of Technology, 2006.
// https://sais.se/mthprize/2007/ntais2007.pdf
//
// Saroukos, Spyridon. Enhancing a Greek language stemmer.
// University of Tampere, 2008.
// https://tampub.uta.fi/bitstream/handle/10024/80480/gradu03463.pdf

stringescapes {}

stringdef a    '{U+03B1}' // alpha
stringdef v    '{U+03B2}' // beta
stringdef g    '{U+03B3}' // gamma
stringdef d    '{U+03B4}' // delta
stringdef e    '{U+03B5}' // epsilon
stringdef z    '{U+03B6}' // zeta
stringdef i    '{U+03B7}' // eta
stringdef th   '{U+03B8}' // theta
stringdef y    '{U+03B9}' // iota
stringdef k    '{U+03BA}' // kappa
stringdef l    '{U+03BB}' // lamda
stringdef m    '{U+03BC}' // mu
stringdef n    '{U+03BD}' // nu
stringdef x    '{U+03BE}' // xi
stringdef o    '{U+03BF}' // omicron
stringdef p    '{U+03C0}' // pi
stringdef r    '{U+03C1}' // rho
stringdef ss   '{U+03C2}' // sigma final
stringdef s    '{U+03C3}' // sigma
stringdef t    '{U+03C4}' // tau
stringdef u    '{U+03C5}' // upsilon
stringdef f    '{U+03C6}' // phi
stringdef ch   '{U+03C7}' // chi
stringdef ps   '{U+03C8}' // psi
stringdef oo   '{U+03C9}' // omega

stringdef A    '{U+0391}' // Alpha
stringdef V    '{U+0392}' // Beta
stringdef G    '{U+0393}' // Gamma
stringdef D    '{U+0394}' // Delta
stringdef E    '{U+0395}' // Epsilon
stringdef Z    '{U+0396}' // Zeta
stringdef I    '{U+0397}' // Eta
stringdef Th   '{U+0398}' // Theta
stringdef Y    '{U+0399}' // Iota
stringdef K    '{U+039A}' // Kappa
stringdef L    '{U+039B}' // Lamda
stringdef M    '{U+039C}' // Mu
stringdef N    '{U+039D}' // Nu
stringdef X    '{U+039E}' // Xi
stringdef O    '{U+039F}' // Omicron
stringdef P    '{U+03A0}' // Pi
stringdef R    '{U+03A1}' // Rho
stringdef S    '{U+03A3}' // Sigma
stringdef T    '{U+03A4}' // Tau
stringdef U    '{U+03A5}' // Upsilon
stringdef F    '{U+03A6}' // Phi
stringdef Ch   '{U+03A7}' // Chi
stringdef Ps   '{U+03A8}' // Psi
stringdef Oo   '{U+03A9}' // Omega

stringdef Y:   '{U+03AA}' // Iota with dialytika
stringdef U:   '{U+03AB}' // Upsilon with dialytika

stringdef a'   '{U+03AC}' // alpha with tonos
stringdef e'   '{U+03AD}' // epsilon with tonos
stringdef i'   '{U+03AE}' // eta with tonos
stringdef y'   '{U+03AF}' // iota with tonos
stringdef o'   '{U+03CC}' // omicron with tonos
stringdef u'   '{U+03CD}' // upsilon with tonos
stringdef oo'  '{U+03CE}' // omega with tonos

stringdef i:'  '{U+0390}' // iota with dialytika and tonos
stringdef u:'  '{U+03B0}' // upsilon with dialytika and tonos

stringdef i:   '{U+03CA}' // iota with dialytika
stringdef u:   '{U+03CB}' // upsilon with dialytika

stringdef A'   '{U+0386}' // Alpha with tonos
stringdef E'   '{U+0388}' // Epsilon with tonos
stringdef I'   '{U+0389}' // Eta with tonos
stringdef Y'   '{U+038A}' // Iota with tonos
stringdef O'   '{U+038C}' // Omicron with tonos
stringdef U'   '{U+038E}' // Upsilon with tonos
stringdef OO'  '{U+038F}' // Omega with tonos

externals ( stem )

booleans ( test1 )

groupings ( v v2 )

routines ( tolower has_min_length
           steps1 steps2 steps3 steps4 steps5 steps6 steps7
           steps8 steps9 steps10
           step1 step2a step2b step2c step2d step3 step4
           step5a step5b step5c step5d step5e step5f
           step5g step5h step5i
           step5j step5k step5l step5m
           step6 step7 )

define v '{a}{e}{i}{y}{o}{u}{oo}'
define v2 '{a}{e}{i}{y}{o}{oo}'

backwardmode (
  define has_min_length as (
    $(len >= 3)
  )

  define tolower as (
    repeat (
      [substring] among (
        '{A}' (<- '{a}')
        '{V}' (<- '{v}')
        '{G}' (<- '{g}')
        '{D}' (<- '{d}')
        '{E}' (<- '{e}')
        '{Z}' (<- '{z}')
        '{I}' (<- '{i}')
        '{Th}' (<- '{th}')
        '{Y}' (<- '{y}')
        '{K}' (<- '{k}')
        '{L}' (<- '{l}')
        '{M}' (<- '{m}')
        '{N}' (<- '{n}')
        '{X}' (<- '{x}')
        '{O}' (<- '{o}')
        '{P}' (<- '{p}')
        '{R}' (<- '{r}')
        '{S}' (<- '{s}')
        '{T}' (<- '{t}')
        '{U}' (<- '{u}')
        '{F}' (<- '{f}')
        '{Ch}' (<- '{ch}')
        '{Ps}' (<- '{ps}')
        '{Oo}' (<- '{oo}')
        '{Y:}' (<- '{y}')
        '{U:}' (<- '{u}')
        '{a'}' (<- '{a}')
        '{e'}' (<- '{e}')
        '{i'}' (<- '{i}')
        '{y'}' (<- '{y}')
        '{o'}' (<- '{o}')
        '{u'}' (<- '{u}')
        '{oo'}' (<- '{oo}')
        '{i:'}' (<- '{i}')
        '{u:'}' (<- '{u}')
        '{i:}' (<- '{i}')
        '{u:}' (<- '{u}')
        '{A'}' (<- '{a}')
        '{E'}' (<- '{e}')
        '{I'}' (<- '{i}')
        '{Y'}' (<- '{y}')
        '{O'}' (<- '{o}')
        '{U'}' (<- '{u}')
        '{OO'}' (<- '{oo}')
        '{ss}' (<- '{s}')
         '' (next)
      )
    )
  )

  define step1 as (
    [substring] among (
      '{f}{a}{g}{y}{a}' '{f}{a}{g}{y}{o}{u}' '{f}{a}{g}{y}{oo}{n}' (<- '{f}{a}')
      '{s}{k}{a}{g}{y}{a}' '{s}{k}{a}{g}{y}{o}{u}' '{s}{k}{a}{g}{y}{oo}{n}' (<- '{s}{k}{a}')
      '{o}{l}{o}{g}{y}{o}{u}' '{o}{l}{o}{g}{y}{a}' '{o}{l}{o}{g}{y}{oo}{n}' (<- '{o}{l}{o}')
      '{s}{o}{g}{y}{o}{u}' '{s}{o}{g}{y}{a}' '{s}{o}{g}{y}{oo}{n}' (<- '{s}{o}')
      '{t}{a}{t}{o}{g}{y}{a}' '{t}{a}{t}{o}{g}{y}{o}{u}' '{t}{a}{t}{o}{g}{y}{oo}{n}' (<- '{t}{a}{t}{o}')
      '{k}{r}{e}{a}{s}' '{k}{r}{e}{a}{t}{o}{s}' '{k}{r}{e}{a}{t}{a}' '{k}{r}{e}{a}{t}{oo}{n}' (<- '{k}{r}{e}')
      '{p}{e}{r}{a}{s}' '{p}{e}{r}{a}{t}{o}{s}' '{p}{e}{r}{a}{t}{i}' '{p}{e}{r}{a}{t}{a}' '{p}{e}{r}{a}{t}{oo}{n}' (<- '{p}{e}{r}')
      '{t}{e}{r}{a}{s}' '{t}{e}{r}{a}{t}{o}{s}' '{t}{e}{r}{a}{t}{a}' '{t}{e}{r}{a}{t}{oo}{n}' (<- '{t}{e}{r}')
      '{f}{oo}{s}' '{f}{oo}{t}{o}{s}' '{f}{oo}{t}{a}' '{f}{oo}{t}{oo}{n}' (<- '{f}{oo}')
      '{k}{a}{th}{e}{s}{t}{oo}{s}' '{k}{a}{th}{e}{s}{t}{oo}{t}{o}{s}' '{k}{a}{th}{e}{s}{t}{oo}{t}{a}' '{k}{a}{th}{e}{s}{t}{oo}{t}{oo}{n}' (<- '{k}{a}{th}{e}{s}{t}')
      '{g}{e}{g}{o}{n}{o}{s}' '{g}{e}{g}{o}{n}{o}{t}{o}{s}' '{g}{e}{g}{o}{n}{o}{t}{a}' '{g}{e}{g}{o}{n}{o}{t}{oo}{n}' (<- '{g}{e}{g}{o}{n}')
    )
    unset test1
  )

  define steps1 as (
    [substring] among (
      '{y}{z}{a}' '{y}{z}{e}{s}' '{y}{z}{e}' '{y}{z}{a}{m}{e}' '{y}{z}{a}{t}{e}' '{y}{z}{a}{n}' '{y}{z}{a}{n}{e}' '{y}{z}{oo}' '{y}{z}{e}{y}{s}' '{y}{z}{e}{y}'
      '{y}{z}{o}{u}{m}{e}' '{y}{z}{e}{t}{e}' '{y}{z}{o}{u}{n}' '{y}{z}{o}{u}{n}{e}' (
        delete
        unset test1
        ([] substring atlimit among (
          '{a}{n}{a}{m}{p}{a}' '{e}{m}{p}{a}' '{e}{p}{a}' '{x}{a}{n}{a}{p}{a}' '{p}{a}' '{p}{e}{r}{y}{p}{a}' '{a}{th}{r}{o}' '{s}{u}{n}{a}{th}{r}{o}' '{d}{a}{n}{e}'
          (<- '{y}')
        )) or
        ([] substring atlimit among (
          '{m}{a}{r}{k}' '{k}{o}{r}{n}' '{a}{m}{p}{a}{r}' '{a}{r}{r}' '{v}{a}{th}{u}{r}{y}' '{v}{a}{r}{k}' '{v}' '{v}{o}{l}{v}{o}{r}' '{g}{k}{r}'
          '{g}{l}{u}{k}{o}{r}' '{g}{l}{u}{k}{u}{r}' '{y}{m}{p}' '{l}' '{l}{o}{u}' '{m}{a}{r}' '{m}' '{p}{r}' '{m}{p}{r}' '{p}{o}{l}{u}{r}' '{p}'
          '{r}' '{p}{y}{p}{e}{r}{o}{r}'
          (<- '{y}{z}')
        ))
      )
    )
  )

  define steps2 as (
    [substring] among (
      '{oo}{th}{i}{k}{a}' '{oo}{th}{i}{k}{e}{s}' '{oo}{th}{i}{k}{e}' '{oo}{th}{i}{k}{a}{m}{e}' '{oo}{th}{i}{k}{a}{t}{e}' '{oo}{th}{i}{k}{a}{n}' '{oo}{th}{i}{k}{a}{n}{e}' (
        delete
        unset test1
        [] substring atlimit among (
          '{a}{l}' '{v}{y}' '{e}{n}' '{u}{ps}' '{l}{y}' '{z}{oo}' '{s}' '{ch}' (<- '{oo}{n}')
        )
      )
    )
  )

  define steps3 as (
    [substring] among (
      '{y}{s}{a}' '{y}{s}{e}{s}' '{y}{s}{e}' '{y}{s}{a}{m}{e}' '{y}{s}{a}{t}{e}' '{y}{s}{a}{n}' '{y}{s}{a}{n}{e}' (
        delete
        unset test1
        ('{y}{s}{a}' atlimit <- '{y}{s}') or
        ([] substring atlimit among (
          '{a}{n}{a}{m}{p}{a}' '{a}{th}{r}{o}' '{e}{m}{p}{a}' '{e}{s}{e}' '{e}{s}{oo}{k}{l}{e}' '{e}{p}{a}' '{x}{a}{n}{a}{p}{a}' '{e}{p}{e}' '{p}{e}{r}{y}{p}{a}'
          '{s}{u}{n}{a}{th}{r}{o}' '{d}{a}{n}{e}' '{k}{l}{e}' '{ch}{a}{r}{t}{o}{p}{a}' '{e}{x}{a}{r}{ch}{a}' '{m}{e}{t}{e}{p}{e}' '{a}{p}{o}{k}{l}{e}'
          '{a}{p}{e}{k}{l}{e}' '{e}{k}{l}{e}' '{p}{e}'
          (<- '{y}')
        )) or
        ([] substring atlimit among (
          '{a}{n}' '{a}{f}' '{g}{e}' '{g}{y}{g}{a}{n}{t}{o}{a}{f}' '{g}{k}{e}' '{d}{i}{m}{o}{k}{r}{a}{t}' '{k}{o}{m}' '{g}{k}' '{m}' '{p}'
          '{p}{o}{u}{k}{a}{m}' '{o}{l}{o}' '{l}{a}{r}'
          (<- '{y}{s}')
        ))
      )
    )
  )

  define steps4 as (
    [substring] among (
      '{y}{s}{oo}' '{y}{s}{e}{y}{s}' '{y}{s}{e}{y}' '{y}{s}{o}{u}{m}{e}' '{y}{s}{e}{t}{e}' '{y}{s}{o}{u}{n}' '{y}{s}{o}{u}{n}{e}' (
        delete
        unset test1
        [] substring atlimit among (
          '{a}{n}{a}{m}{p}{a}' '{e}{m}{p}{a}' '{e}{s}{e}' '{e}{s}{oo}{k}{l}{e}' '{e}{p}{a}' '{x}{a}{n}{a}{p}{a}' '{e}{p}{e}' '{p}{e}{r}{y}{p}{a}' '{a}{th}{r}{o}'
          '{s}{u}{n}{a}{th}{r}{o}' '{d}{a}{n}{e}' '{k}{l}{e}' '{ch}{a}{r}{t}{o}{p}{a}' '{e}{x}{a}{r}{ch}{a}' '{m}{e}{t}{e}{p}{e}' '{a}{p}{o}{k}{l}{e}' '{a}{p}{e}{k}{l}{e}'
          '{e}{k}{l}{e}' '{p}{e}'
          (<- '{y}')
        )
      )
    )
  )

  define steps5 as (
    [substring] among (
      '{y}{s}{t}{o}{s}' '{y}{s}{t}{o}{u}' '{y}{s}{t}{o}' '{y}{s}{t}{e}' '{y}{s}{t}{o}{y}' '{y}{s}{t}{oo}{n}' '{y}{s}{t}{o}{u}{s}' '{y}{s}{t}{i}' '{y}{s}{t}{i}{s}'
      '{y}{s}{t}{a}' '{y}{s}{t}{e}{s}' (
        delete
        unset test1
        ([] substring atlimit among (
          '{d}{a}{n}{e}' '{s}{u}{n}{a}{th}{r}{o}' '{k}{l}{e}' '{s}{e}' '{e}{s}{oo}{k}{l}{e}' '{a}{s}{e}' '{p}{l}{e}'
          (<- '{y}')
        )) or
        ([] substring atlimit among (
          '{m}' '{p}' '{a}{p}' '{a}{r}' '{i}{d}' '{k}{t}' '{s}{k}' '{s}{ch}' '{u}{ps}' '{f}{a}' '{ch}{r}' '{ch}{t}' '{a}{k}{t}'
          '{a}{o}{r}' '{a}{s}{ch}' '{a}{t}{a}' '{a}{ch}{n}' '{a}{ch}{t}' '{g}{e}{m}' '{g}{u}{r}' '{e}{m}{p}' '{e}{u}{p}' '{e}{ch}{th}' '{i}{f}{a}'
          '{k}{a}{th}' '{k}{a}{k}' '{k}{u}{l}' '{l}{u}{g}' '{m}{a}{k}' '{m}{e}{g}' '{t}{a}{ch}' '{f}{y}{l}' '{ch}{oo}{r}'
          (<- '{y}{s}{t}')
        ))
      )
    )
  )

  define steps6 as (
    [substring] among (
      '{y}{s}{m}{o}' '{y}{s}{m}{o}{y}' '{y}{s}{m}{o}{s}' '{y}{s}{m}{o}{u}' '{y}{s}{m}{o}{u}{s}' '{y}{s}{m}{oo}{n}' (
        delete
        unset test1
        ([] substring atlimit among (
          '{s}{e}' '{m}{e}{t}{a}{s}{e}' '{m}{y}{k}{r}{o}{s}{e}' '{e}{g}{k}{l}{e}' '{a}{p}{o}{k}{l}{e}'
          (<- '{y}{s}{m}')
        )) or
        ([] substring atlimit among (
          '{d}{a}{n}{e}' '{a}{n}{t}{y}{d}{a}{n}{e}'
          (<- '{y}')
        )) or
        ([substring] among (
          '{a}{g}{n}{oo}{s}{t}{y}{k}' (<- '{a}{g}{n}{oo}{s}{t}')
          '{a}{t}{o}{m}{y}{k}' (<- '{a}{t}{o}{m}')
          '{g}{n}{oo}{s}{t}{y}{k}' (<- '{g}{n}{oo}{s}{t}')
          '{e}{th}{n}{y}{k}' (<- '{e}{th}{n}')
          '{e}{k}{l}{e}{k}{t}{y}{k}' (<- '{e}{k}{l}{e}{k}{t}')
          '{s}{k}{e}{p}{t}{y}{k}' (<- '{s}{k}{e}{p}{t}')
          '{t}{o}{p}{y}{k}' (<- '{t}{o}{p}')
          '{a}{l}{e}{x}{a}{n}{d}{r}{y}{n}' (<- '{a}{l}{e}{x}{a}{n}{d}{r}')
          '{v}{u}{z}{a}{n}{t}{y}{n}' (<- '{v}{u}{z}{a}{n}{t}')
          '{th}{e}{a}{t}{r}{y}{n}' (<- '{th}{e}{a}{t}{r}')
        ))
      )
    )
  )

  define steps7 as (
    [substring] among (
      '{a}{r}{a}{k}{y}' '{a}{r}{a}{k}{y}{a}' '{o}{u}{d}{a}{k}{y}' '{o}{u}{d}{a}{k}{y}{a}' (
        delete
        unset test1
        [] substring atlimit among (
         '{s}' '{ch}'
         (<- '{a}{r}{a}{k}')
        )
      )
    )
  )

  define steps8 as (
    [substring] among (
      '{a}{k}{y}' '{a}{k}{y}{a}' '{y}{t}{s}{a}' '{y}{t}{s}{a}{s}' '{y}{t}{s}{e}{s}' '{y}{t}{s}{oo}{n}' '{a}{r}{a}{k}{y}' '{a}{r}{a}{k}{y}{a}' (
        delete
        unset test1
        ([] substring atlimit among (
          '{v}{a}{m}{v}' '{v}{r}' '{k}{a}{y}{m}' '{k}{o}{n}' '{k}{o}{r}' '{l}{a}{v}{r}' '{l}{o}{u}{l}' '{m}{e}{r}' '{m}{o}{u}{s}{t}'
          '{n}{a}{g}{k}{a}{s}' '{p}{l}' '{r}' '{r}{u}' '{s}' '{s}{k}' '{s}{o}{k}' '{s}{p}{a}{n}' '{t}{z}' '{f}{a}{r}{m}' '{ch}' '{k}{a}{p}{a}{k}'
          '{a}{l}{y}{s}{f}' '{a}{m}{v}{r}' '{a}{n}{th}{r}' '{k}' '{f}{u}{l}' '{k}{a}{t}{r}{a}{p}' '{k}{l}{y}{m}' '{m}{a}{l}' '{s}{l}{o}{v}' '{f}'
          '{s}{f}' '{t}{s}{e}{ch}{o}{s}{l}{o}{v}'
           (<- '{a}{k}')
        )) or
        ([] substring atlimit among (
          '{v}' '{v}{a}{l}' '{g}{y}{a}{n}' '{g}{l}' '{z}' '{i}{g}{o}{u}{m}{e}{n}' '{k}{a}{r}{d}' '{k}{o}{n}' '{m}{a}{k}{r}{u}{n}' '{n}{u}{f}'
          '{p}{a}{t}{e}{r}' '{p}' '{s}{k}' '{t}{o}{s}' '{t}{r}{y}{p}{o}{l}'
          (<- '{y}{t}{s}')
        )) or
        ([] '{k}{o}{r}' <- '{y}{t}{s}')
      )
    )
  )

  define steps9 as (
    [substring] among (
      '{y}{d}{y}{o}' '{y}{d}{y}{a}' '{y}{d}{y}{oo}{n}' (
        delete
        unset test1
        ([] substring atlimit among (
          '{a}{y}{f}{n}' '{y}{r}' '{o}{l}{o}' '{ps}{a}{l}' (<- '{y}{d}')
        )) or
        ([] substring among (
          '{e}' '{p}{a}{y}{ch}{n}' (<- '{y}{d}')
        ))
      )
    )
  )

  define steps10 as (
    [substring] among (
      '{y}{s}{k}{o}{s}' '{y}{s}{k}{o}{u}' '{y}{s}{k}{o}' '{y}{s}{k}{e}' (
        delete
        unset test1
        [] substring atlimit among (
         '{d}' '{y}{v}' '{m}{i}{n}' '{r}' '{f}{r}{a}{g}{k}' '{l}{u}{k}' '{o}{v}{e}{l}'
         (<- '{y}{s}{k}')
        )
      )
    )
  )

  define step2a as (
    [substring] among (
      '{a}{d}{e}{s}' '{a}{d}{oo}{n}' (delete)
    )
    not ([substring] among (
      '{o}{k}' '{m}{a}{m}' '{m}{a}{n}' '{m}{p}{a}{m}{p}' '{p}{a}{t}{e}{r}' '{g}{y}{a}{g}{y}' '{n}{t}{a}{n}{t}' '{k}{u}{r}' '{th}{e}{y}' '{p}{e}{th}{e}{r}'
    ))
    insert '{a}{d}'
  )

  define step2b as (
    [substring] among (
      '{e}{d}{e}{s}' '{e}{d}{oo}{n}' (delete)
    )
    [] substring among (
      '{o}{p}' '{y}{p}' '{e}{m}{p}' '{u}{p}' '{g}{i}{p}' '{d}{a}{p}' '{k}{r}{a}{s}{p}' '{m}{y}{l}' (<- '{e}{d}')
    )
  )

  define step2c as (
    [substring] among (
      '{o}{u}{d}{e}{s}' '{o}{u}{d}{oo}{n}' (delete)
    )
    [] substring among (
      '{a}{r}{k}' '{k}{a}{l}{y}{a}{k}' '{p}{e}{t}{a}{l}' '{l}{y}{ch}' '{p}{l}{e}{x}' '{s}{k}' '{s}' '{f}{l}' '{f}{r}' '{v}{e}{l}' '{l}{o}{u}{l}' '{ch}{n}'
      '{s}{p}' '{t}{r}{a}{g}' '{f}{e}' (<- '{o}{u}{d}')
    )
  )

  define step2d as (
    [substring] among (
      '{e}{oo}{s}' '{e}{oo}{n}' (delete unset test1)
    )
    [] substring atlimit among (
      '{th}' '{d}' '{e}{l}' '{g}{a}{l}' '{n}' '{p}' '{y}{d}' '{p}{a}{r}' (<- '{e}')
    )
  )

  define step3 as (
    [substring] among (
      '{y}{a}' '{y}{o}{u}' '{y}{oo}{n}' (delete unset test1)
    )
    ([] v <- '{y}')
  )

  define step4 as (
    [substring] among (
       '{y}{k}{a}' '{y}{k}{o}' '{y}{k}{o}{u}' '{y}{k}{oo}{n}' (delete unset test1)
    )
    ([] v <- '{y}{k}') or
    [] substring atlimit among (
      '{a}{l}' '{a}{d}' '{e}{n}{d}' '{a}{m}{a}{n}' '{a}{m}{m}{o}{ch}{a}{l}' '{i}{th}' '{a}{n}{i}{th}' '{a}{n}{t}{y}{d}' '{f}{u}{s}' '{v}{r}{oo}{m}' '{g}{e}{r}'
      '{e}{x}{oo}{d}' '{k}{a}{l}{p}' '{k}{a}{l}{l}{y}{n}' '{k}{a}{t}{a}{d}' '{m}{o}{u}{l}' '{m}{p}{a}{n}' '{m}{p}{a}{g}{y}{a}{t}' '{m}{p}{o}{l}' '{m}{p}{o}{s}'
      '{n}{y}{t}' '{x}{y}{k}' '{s}{u}{n}{o}{m}{i}{l}' '{p}{e}{t}{s}' '{p}{y}{t}{s}' '{p}{y}{k}{a}{n}{t}' '{p}{l}{y}{a}{t}{s}' '{p}{o}{s}{t}{e}{l}{n}' '{p}{r}{oo}{t}{o}{d}'
      '{s}{e}{r}{t}' '{s}{u}{n}{a}{d}' '{t}{s}{a}{m}' '{u}{p}{o}{d}' '{f}{y}{l}{o}{n}' '{f}{u}{l}{o}{d}' '{ch}{a}{s}'
      (<- '{y}{k}')
    )
  )

  define step5a as (
    do ('{a}{g}{a}{m}{e}' atlimit <- '{a}{g}{a}{m}')
    do (
      [substring] among (
        '{a}{g}{a}{m}{e}' '{i}{s}{a}{m}{e}' '{o}{u}{s}{a}{m}{e}' '{i}{k}{a}{m}{e}' '{i}{th}{i}{k}{a}{m}{e}' (delete unset test1)
      )
    )
    ['{a}{m}{e}']
    delete
    unset test1
    [] substring atlimit among (
      '{a}{n}{a}{p}' '{a}{p}{o}{th}' '{a}{p}{o}{k}' '{a}{p}{o}{s}{t}' '{v}{o}{u}{v}' '{x}{e}{th}' '{o}{u}{l}' '{p}{e}{th}' '{p}{y}{k}{r}' '{p}{o}{t}' '{s}{y}{ch}' '{ch}'
      (<- '{a}{m}')
    )
  )

  define step5b as (
    do (
      [substring] among (
        '{a}{g}{a}{n}{e}' '{i}{s}{a}{n}{e}' '{o}{u}{s}{a}{n}{e}' '{y}{o}{n}{t}{a}{n}{e}' '{y}{o}{t}{a}{n}{e}' '{y}{o}{u}{n}{t}{a}{n}{e}' '{o}{n}{t}{a}{n}{e}' '{o}{t}{a}{n}{e}'
        '{o}{u}{n}{t}{a}{n}{e}' '{i}{k}{a}{n}{e}' '{i}{th}{i}{k}{a}{n}{e}' (
          delete
          unset test1
          [] substring atlimit among (
            '{t}{r}' '{t}{s}' (<- '{a}{g}{a}{n}')
          )
        )
      )
    )
    ['{a}{n}{e}']
    delete
    unset test1
    ([] v2 <- '{a}{n}') or
    [] substring atlimit among (
      '{v}{e}{t}{e}{r}' '{v}{o}{u}{l}{k}' '{v}{r}{a}{ch}{m}' '{g}' '{d}{r}{a}{d}{o}{u}{m}'
      '{th}' '{k}{a}{l}{p}{o}{u}{z}' '{k}{a}{s}{t}{e}{l}' '{k}{o}{r}{m}{o}{r}' '{l}{a}{o}{p}{l}' '{m}{oo}{a}{m}{e}{th}'
      '{m}' '{m}{o}{u}{s}{o}{u}{l}{m}' '{n}' '{o}{u}{l}' '{p}' '{p}{e}{l}{e}{k}' '{p}{l}' '{p}{o}{l}{y}{s}'
      '{p}{o}{r}{t}{o}{l}' '{s}{a}{r}{a}{k}{a}{t}{s}' '{s}{o}{u}{l}{t}' '{t}{s}{a}{r}{l}{a}{t}' '{o}{r}{f}'
      '{t}{s}{y}{g}{g}' '{t}{s}{o}{p}' '{f}{oo}{t}{o}{s}{t}{e}{f}' '{ch}' '{ps}{u}{ch}{o}{p}{l}' '{a}{g}'
      '{g}{a}{l}' '{g}{e}{r}' '{d}{e}{k}' '{d}{y}{p}{l}' '{a}{m}{e}{r}{y}{k}{a}{n}' '{o}{u}{r}' '{p}{y}{th}'
      '{p}{o}{u}{r}{y}{t}' '{s}' '{z}{oo}{n}{t}' '{y}{k}' '{k}{a}{s}{t}' '{k}{o}{p}' '{l}{y}{ch}'
      '{l}{o}{u}{th}{i}{r}' '{m}{a}{y}{n}{t}' '{m}{e}{l}' '{s}{y}{g}' '{s}{p}' '{s}{t}{e}{g}' '{t}{r}{a}{g}'
      '{t}{s}{a}{g}' '{f}' '{e}{r}' '{a}{d}{a}{p}' '{a}{th}{y}{g}{g}' '{a}{m}{i}{ch}' '{a}{n}{y}{k}'
      '{a}{n}{o}{r}{g}' '{a}{p}{i}{g}' '{a}{p}{y}{th}' '{a}{t}{s}{y}{g}{g}' '{v}{a}{s}' '{v}{a}{s}{k}'
      '{v}{a}{th}{u}{g}{a}{l}' '{v}{y}{o}{m}{i}{ch}' '{v}{r}{a}{ch}{u}{k}' '{d}{y}{a}{t}' '{d}{y}{a}{f}' '{e}{n}{o}{r}{g}'
      '{th}{u}{s}' '{k}{a}{p}{n}{o}{v}{y}{o}{m}{i}{ch}' '{k}{a}{t}{a}{g}{a}{l}' '{k}{l}{y}{v}' '{k}{o}{y}{l}{a}{r}{f}'
      '{l}{y}{v}' '{m}{e}{g}{l}{o}{v}{y}{o}{m}{i}{ch}' '{m}{y}{k}{r}{o}{v}{y}{o}{m}{i}{ch}' '{n}{t}{a}{v}'
      '{x}{i}{r}{o}{k}{l}{y}{v}' '{o}{l}{y}{g}{o}{d}{a}{m}' '{o}{l}{o}{g}{a}{l}' '{p}{e}{n}{t}{a}{r}{f}' '{p}{e}{r}{i}{f}'
      '{p}{e}{r}{y}{t}{r}' '{p}{l}{a}{t}' '{p}{o}{l}{u}{d}{a}{p}' '{p}{o}{l}{u}{m}{i}{ch}' '{s}{t}{e}{f}' '{t}{a}{v}'
      '{t}{e}{t}' '{u}{p}{e}{r}{i}{f}' '{u}{p}{o}{k}{o}{p}' '{ch}{a}{m}{i}{l}{o}{d}{a}{p}' '{ps}{i}{l}{o}{t}{a}{v}'
      (<- '{a}{n}')
    )
  )

  define step5c as (
    do (
      [substring] among (
        '{i}{s}{e}{t}{e}' (delete unset test1)
      )
    )
    ['{e}{t}{e}']
    delete
    unset test1
    ([] v2 <- '{e}{t}') or
    ([] substring among (
      '{o}{d}' '{a}{y}{r}' '{f}{o}{r}' '{t}{a}{th}' '{d}{y}{a}{th}' '{s}{ch}' '{e}{n}{d}' '{e}{u}{r}' '{t}{y}{th}' '{u}{p}{e}{r}{th}'
      '{r}{a}{th}' '{e}{n}{th}' '{r}{o}{th}' '{s}{th}' '{p}{u}{r}' '{a}{y}{n}' '{s}{u}{n}{d}' '{s}{u}{n}' '{s}{u}{n}{th}' '{ch}{oo}{r}'
      '{p}{o}{n}' '{v}{r}' '{k}{a}{th}' '{e}{u}{th}' '{e}{k}{th}' '{n}{e}{t}' '{r}{o}{n}' '{a}{r}{k}' '{v}{a}{r}' '{v}{o}{l}' '{oo}{f}{e}{l}'
      (<- '{e}{t}')
    )) or
    [] substring atlimit among (
      '{a}{v}{a}{r}' '{v}{e}{n}' '{e}{n}{a}{r}' '{a}{v}{r}' '{a}{d}' '{a}{th}' '{a}{n}' '{a}{p}{l}' '{v}{a}{r}{o}{n}' '{n}{t}{r}' '{s}{k}' '{k}{o}{p}'
      '{m}{p}{o}{r}' '{n}{y}{f}' '{p}{a}{g}' '{p}{a}{r}{a}{k}{a}{l}' '{s}{e}{r}{p}' '{s}{k}{e}{l}' '{s}{u}{r}{f}' '{t}{o}{k}' '{u}' '{d}' '{e}{m}'
      '{th}{a}{r}{r}' '{th}'
      (<- '{e}{t}')
    )
  )

  define step5d as (
    [substring] among (
      '{o}{n}{t}{a}{s}' '{oo}{n}{t}{a}{s}' (
        delete
        unset test1
        ([] '{a}{r}{ch}' atlimit <- '{o}{n}{t}') or
        ([] '{k}{r}{e}' <- '{oo}{n}{t}')
      )
    )
  )

  define step5e as (
    [substring] among (
      '{o}{m}{a}{s}{t}{e}' '{y}{o}{m}{a}{s}{t}{e}' (
        delete
        unset test1
        ([] '{o}{n}' atlimit <- '{o}{m}{a}{s}{t}')
      )
    )
  )

  define step5f as (
    do (
      ['{y}{e}{s}{t}{e}']
      delete
      unset test1
      [] substring atlimit among (
        '{p}' '{a}{p}' '{s}{u}{m}{p}' '{a}{s}{u}{m}{p}' '{a}{k}{a}{t}{a}{p}' '{a}{m}{e}{t}{a}{m}{f}' (<- '{y}{e}{s}{t}')
      )
    )
    ['{e}{s}{t}{e}']
    delete
    unset test1
    [] substring atlimit among (
      '{a}{l}' '{a}{r}' '{e}{k}{t}{e}{l}' '{z}' '{m}' '{x}' '{p}{a}{r}{a}{k}{a}{l}' '{p}{r}{o}' '{n}{y}{s}'
      (<- '{y}{e}{s}{t}')
    )
  )

  define step5g as (
    do (
      [substring] among (
        '{i}{th}{i}{k}{a}' '{i}{th}{i}{k}{e}{s}' '{i}{th}{i}{k}{e}' (delete unset test1)
      )
    )
    [substring] among (
      '{i}{k}{a}' '{i}{k}{e}{s}' '{i}{k}{e}' (
        delete
        unset test1
        ([] substring among (
           '{s}{k}{oo}{l}' '{s}{k}{o}{u}{l}' '{n}{a}{r}{th}' '{s}{f}' '{o}{th}' '{p}{y}{th}' (<- '{i}{k}')
        )) or
        ([] substring atlimit among (
           '{d}{y}{a}{th}' '{th}' '{p}{a}{r}{a}{k}{a}{t}{a}{th}' '{p}{r}{o}{s}{th}' '{s}{u}{n}{th}' (<- '{i}{k}')
        ))
      )
    )
  )

  define step5h as (
    [substring] among (
      '{o}{u}{s}{a}' '{o}{u}{s}{e}{s}' '{o}{u}{s}{e}' (
        delete
        unset test1
        ([] substring among (
          '{p}{o}{d}{a}{r}' '{v}{l}{e}{p}' '{p}{a}{n}{t}{a}{ch}' '{f}{r}{u}{d}' '{m}{a}{n}{t}{y}{l}' '{m}{a}{l}{l}' '{k}{u}{m}{a}{t}' '{l}{a}{ch}' '{l}{i}{g}'
          '{f}{a}{g}' '{o}{m}' '{p}{r}{oo}{t}' (<- '{o}{u}{s}')

        )) or
        ([] substring atlimit among (
          '{f}{a}{r}{m}{a}{k}' '{ch}{a}{d}' '{a}{g}{k}' '{a}{n}{a}{r}{r}' '{v}{r}{o}{m}' '{e}{k}{l}{y}{p}' '{l}{a}{m}{p}{y}{d}' '{l}{e}{ch}' '{m}' '{p}{a}{t}'
          '{r}' '{l}' '{m}{e}{d}' '{m}{e}{s}{a}{z}' '{u}{p}{o}{t}{e}{y}{n}' '{a}{m}' '{a}{y}{th}' '{a}{n}{i}{k}' '{d}{e}{s}{p}{o}{z}'
          '{e}{n}{d}{y}{a}{f}{e}{r}' '{d}{e}' '{d}{e}{u}{t}{e}{r}{e}{u}' '{k}{a}{th}{a}{r}{e}{u}' '{p}{l}{e}' '{t}{s}{a}'
          (<- '{o}{u}{s}')
        ))
      )
    )
  )

  define step5i as (
    [substring] among (
      '{a}{g}{a}' '{a}{g}{e}{s}' '{a}{g}{e}' (
        delete
        unset test1
        ([] '{k}{o}{l}{l}' <- '{a}{g}') or (
          not ([substring] among ('{ps}{o}{f}' '{n}{a}{u}{l}{o}{ch}'))
          ([] substring among (
            '{o}{f}' '{p}{e}{l}' '{ch}{o}{r}{t}' '{l}{l}' '{s}{f}' '{r}{p}' '{f}{r}' '{p}{r}' '{l}{o}{ch}' '{s}{m}{i}{n}'
            (<- '{a}{g}')
          )) or
          ([] substring atlimit among (
            '{a}{v}{a}{s}{t}' '{p}{o}{l}{u}{f}' '{a}{d}{i}{f}' '{p}{a}{m}{f}' '{r}' '{a}{s}{p}' '{a}{f}' '{a}{m}{a}{l}' '{a}{m}{a}{l}{l}{y}'
            '{a}{n}{u}{s}{t}' '{a}{p}{e}{r}' '{a}{s}{p}{a}{r}' '{a}{ch}{a}{r}' '{d}{e}{r}{v}{e}{n}' '{d}{r}{o}{s}{o}{p}' '{x}{e}{f}' '{n}{e}{o}{p}'
            '{n}{o}{m}{o}{t}' '{o}{l}{o}{p}' '{o}{m}{o}{t}' '{p}{r}{o}{s}{t}' '{p}{r}{o}{s}{oo}{p}{o}{p}' '{s}{u}{m}{p}' '{s}{u}{n}{t}' '{t}' '{u}{p}{o}{t}'
            '{ch}{a}{r}' '{a}{e}{y}{p}' '{a}{y}{m}{o}{s}{t}' '{a}{n}{u}{p}' '{a}{p}{o}{t}' '{a}{r}{t}{y}{p}' '{d}{y}{a}{t}' '{e}{n}' '{e}{p}{y}{t}'
            '{k}{r}{o}{k}{a}{l}{o}{p}' '{s}{y}{d}{i}{r}{o}{p}' '{l}' '{n}{a}{u}' '{o}{u}{l}{a}{m}' '{o}{u}{r}' '{p}' '{t}{r}' '{m}'
            (<- '{a}{g}')
          ))
        )
      )
    )
  )

  define step5j as (
    [substring] among (
      '{i}{s}{e}' '{i}{s}{o}{u}' '{i}{s}{a}' (delete unset test1)
    )
    [] substring atlimit among (
      '{n}' '{ch}{e}{r}{s}{o}{n}' '{d}{oo}{d}{e}{k}{a}{n}' '{e}{r}{i}{m}{o}{n}' '{m}{e}{g}{a}{l}{o}{n}' '{e}{p}{t}{a}{n}' (<- '{i}{s}')
    )
  )

  define step5k as (
    [substring] among (
      '{i}{s}{t}{e}' (delete unset test1)
    )
    [] substring atlimit among (
      '{a}{s}{v}' '{s}{v}' '{a}{ch}{r}' '{ch}{r}' '{a}{p}{l}' '{a}{e}{y}{m}{n}' '{d}{u}{s}{ch}{r}' '{e}{u}{ch}{r}' '{k}{o}{y}{n}{o}{ch}{r}' '{p}{a}{l}{y}{m}{ps}'
      (<- '{i}{s}{t}')
    )
  )

  define step5l as (
    [substring] among (
      '{o}{u}{n}{e}' '{i}{s}{o}{u}{n}{e}' '{i}{th}{o}{u}{n}{e}' (delete unset test1)
    )
    [] substring atlimit among (
      '{n}' '{r}' '{s}{p}{y}' '{s}{t}{r}{a}{v}{o}{m}{o}{u}{t}{s}' '{k}{a}{k}{o}{m}{o}{u}{t}{s}' '{e}{x}{oo}{n}' (<- '{o}{u}{n}')
    )
  )

  define step5m as (
    [substring] among (
      '{o}{u}{m}{e}' '{i}{s}{o}{u}{m}{e}' '{i}{th}{o}{u}{m}{e}' (delete unset test1)
    )
    [] substring atlimit among (
      '{p}{a}{r}{a}{s}{o}{u}{s}' '{f}' '{ch}' '{oo}{r}{y}{o}{p}{l}' '{a}{z}' '{a}{l}{l}{o}{s}{o}{u}{s}' '{a}{s}{o}{u}{s}'
      (<- '{o}{u}{m}')
    )
  )

  define step6 as (
    do (
      [substring] among (
        '{m}{a}{t}{a}' '{m}{a}{t}{oo}{n}' '{m}{a}{t}{o}{s}' (<- '{m}{a}')
      )
    )
    test1
    [substring] among (
      '{a}' '{a}{g}{a}{t}{e}' '{a}{g}{a}{n}' '{a}{e}{y}' '{a}{m}{a}{y}' '{a}{n}' '{a}{s}' '{a}{s}{a}{y}' '{a}{t}{a}{y}' '{a}{oo}' '{e}' '{e}{y}'
      '{e}{y}{s}' '{e}{y}{t}{e}' '{e}{s}{a}{y}' '{e}{s}' '{e}{t}{a}{y}' '{y}' '{y}{e}{m}{a}{y}' '{y}{e}{m}{a}{s}{t}{e}' '{y}{e}{t}{a}{y}' '{y}{e}{s}{a}{y}'
      '{y}{e}{s}{a}{s}{t}{e}' '{y}{o}{m}{a}{s}{t}{a}{n}' '{y}{o}{m}{o}{u}{n}' '{y}{o}{m}{o}{u}{n}{a}' '{y}{o}{n}{t}{a}{n}' '{y}{o}{n}{t}{o}{u}{s}{a}{n}' '{y}{o}{s}{a}{s}{t}{a}{n}'
      '{y}{o}{s}{a}{s}{t}{e}' '{y}{o}{s}{o}{u}{n}' '{y}{o}{s}{o}{u}{n}{a}' '{y}{o}{t}{a}{n}' '{y}{o}{u}{m}{a}' '{y}{o}{u}{m}{a}{s}{t}{e}' '{y}{o}{u}{n}{t}{a}{y}'
      '{y}{o}{u}{n}{t}{a}{n}' '{i}' '{i}{d}{e}{s}' '{i}{d}{oo}{n}' '{i}{th}{e}{y}' '{i}{th}{e}{y}{s}' '{i}{th}{e}{y}{t}{e}' '{i}{th}{i}{k}{a}{t}{e}' '{i}{th}{i}{k}{a}{n}'
      '{i}{th}{o}{u}{n}' '{i}{th}{oo}' '{i}{k}{a}{t}{e}' '{i}{k}{a}{n}' '{i}{s}' '{i}{s}{a}{n}' '{i}{s}{a}{t}{e}' '{i}{s}{e}{y}' '{i}{s}{e}{s}' '{i}{s}{o}{u}{n}'
      '{i}{s}{oo}' '{o}' '{o}{y}' '{o}{m}{a}{y}' '{o}{m}{a}{s}{t}{a}{n}' '{o}{m}{o}{u}{n}' '{o}{m}{o}{u}{n}{a}' '{o}{n}{t}{a}{y}' '{o}{n}{t}{a}{n}'
      '{o}{n}{t}{o}{u}{s}{a}{n}' '{o}{s}' '{o}{s}{a}{s}{t}{a}{n}' '{o}{s}{a}{s}{t}{e}' '{o}{s}{o}{u}{n}' '{o}{s}{o}{u}{n}{a}' '{o}{t}{a}{n}' '{o}{u}' '{o}{u}{m}{a}{y}'
      '{o}{u}{m}{a}{s}{t}{e}' '{o}{u}{n}' '{o}{u}{n}{t}{a}{y}' '{o}{u}{n}{t}{a}{n}' '{o}{u}{s}' '{o}{u}{s}{a}{n}' '{o}{u}{s}{a}{t}{e}' '{u}' '{u}{s}' '{oo}'
      '{oo}{n}' (delete)
    )
  )

  define step7 as (
    [substring] among (
      '{e}{s}{t}{e}{r}' '{e}{s}{t}{a}{t}' '{o}{t}{e}{r}' '{o}{t}{a}{t}' '{u}{t}{e}{r}' '{u}{t}{a}{t}' '{oo}{t}{e}{r}' '{oo}{t}{a}{t}' (delete)
    )
  )
)

define stem as (
    backwards (
      do tolower
      has_min_length
      set test1
      do step1
      do steps1
      do steps2
      do steps3
      do steps4
      do steps5
      do steps6
      do steps7
      do steps8
      do steps9
      do steps10
      do step2a
      do step2b
      do step2c
      do step2d
      do step3
      do step4
      do step5a
      do step5b
      do step5c
      do step5d
      do step5e
      do step5f
      do step5g
      do step5h
      do step5j
      do step5i
      do step5k
      do step5l
      do step5m
      do step6
      do step7
    )
)