nani ga haitte kita n
nani ga haitte kita n ?
n a n i WORD_BOUNDARY g a WORD_BOUNDARY h a i t t e WORD_BOUNDARY k i t a WORD_BOUNDARY n WORD_BOUNDARY
n a n i WORD_BOUNDARY g a WORD_BOUNDARY h a i t t e WORD_BOUNDARY k i t a WORD_BOUNDARY n WORD_BOUNDARY