nan no oto ga shiteru
nan no oto ga shiteru ?
n a n WORD_BOUNDARY n o WORD_BOUNDARY o t o WORD_BOUNDARY g a WORD_BOUNDARY ʃ i t e r ɯ WORD_BOUNDARY
n a n WORD_BOUNDARY n o WORD_BOUNDARY o t o WORD_BOUNDARY g a WORD_BOUNDARY s h i t e r u WORD_BOUNDARY