a nan nan datta koko no
a nan nan datta koko no ?
a WORD_BOUNDARY n a n WORD_BOUNDARY n a n WORD_BOUNDARY d a t t a WORD_BOUNDARY k o k o WORD_BOUNDARY n o WORD_BOUNDARY
a WORD_BOUNDARY n a n WORD_BOUNDARY n a n WORD_BOUNDARY d a t t a WORD_BOUNDARY k o k o WORD_BOUNDARY n o WORD_BOUNDARY