tra la ra la ra
tra la ra la ra .
t ɾ a WORD_BOUNDARY l a WORD_BOUNDARY ɾ a WORD_BOUNDARY l a WORD_BOUNDARY ɾ a WORD_BOUNDARY
t r a WORD_BOUNDARY l a WORD_BOUNDARY r a WORD_BOUNDARY l a WORD_BOUNDARY r a WORD_BOUNDARY . WORD_BOUNDARY