read 1b29301b371b5b3f3437681b5b313b3234721b5b6d1b5b346c1b5b481b5b324a477275c39f # write 0d read 0d # write 0d read 1b5b4a # write 0d read 6465 # write 0d read 0d1b5b4a # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read # write 0d read 616263 # write 0d read 0d1b5b4a # write 0d read 07 # write 0d read 6163646566 # write 0d read # write 0d read 1b5b32343b31481b5b324a1b5b3f34376c1b380d1b5b3f316c1b3e