baseClass a <anchor 200 200> @TOP_1;
baseClass fi <anchor 200 0> @BOTTOM_1;
baseClass fi <anchor 400 0> @BOTTOM_2;
markClass acute <anchor 0 200> @TOP;
markClass circumflex <anchor 200 0> @BOTTOM;

feature test {
    pos ligature [a fi] @BOTTOM_1 mark @BOTTOM @TOP_1 mark @TOP
            ligComponent @BOTTOM_2 mark @BOTTOM;
} test;