a onaka ippai ni natta
a onaka ippai ni natta ?
a WORD_BOUNDARY o n a k a WORD_BOUNDARY i p p a i WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY
a WORD_BOUNDARY o n a k a WORD_BOUNDARY i p p a i WORD_BOUNDARY n i WORD_BOUNDARY n a t t a WORD_BOUNDARY