chas chas chas
chas chas chas
fam fam fam
chas chas chas .
t̠ʃ a s WORD_BOUNDARY t̠ʃ a s WORD_BOUNDARY t̠ʃ a s WORD_BOUNDARY
c h a s WORD_BOUNDARY c h a s WORD_BOUNDARY c h a s WORD_BOUNDARY . WORD_BOUNDARY