nande u ni aru no
nande u ni aru no ?
n a n d e WORD_BOUNDARY ɯ WORD_BOUNDARY n i WORD_BOUNDARY a r ɯ WORD_BOUNDARY n o WORD_BOUNDARY
n a n d e WORD_BOUNDARY u WORD_BOUNDARY n i WORD_BOUNDARY a r u WORD_BOUNDARY n o WORD_BOUNDARY