ooo oooo naaa naaa naaa
ooo oooo naaa naaa naaa .
o o o WORD_BOUNDARY o o o o WORD_BOUNDARY n a a a WORD_BOUNDARY n a a a WORD_BOUNDARY n a a a WORD_BOUNDARY
o o o WORD_BOUNDARY o o o o WORD_BOUNDARY n a a a WORD_BOUNDARY n a a a WORD_BOUNDARY n a a a WORD_BOUNDARY . WORD_BOUNDARY