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