go go go bu bu
go go go bu bu .
ɡ o WORD_BOUNDARY ɡ o WORD_BOUNDARY ɡ o WORD_BOUNDARY b u WORD_BOUNDARY b u WORD_BOUNDARY
g o WORD_BOUNDARY g o WORD_BOUNDARY g o WORD_BOUNDARY b u WORD_BOUNDARY b u WORD_BOUNDARY . WORD_BOUNDARY