tch tch tch tch
tch tch tch tch
co co co co
tch tch tch tch .
t e s e a ʃ WORD_BOUNDARY t e s e a ʃ WORD_BOUNDARY t e s e a ʃ WORD_BOUNDARY t e s e a ʃ WORD_BOUNDARY
t c h WORD_BOUNDARY t c h WORD_BOUNDARY t c h WORD_BOUNDARY t c h WORD_BOUNDARY