muzukashiku naru no wa nani ga muzukashiku naru no
muzukashiku naru no wa nani ga muzukashiku naru no ?
m ɯ z ɯ k a ʃ i k ɯ WORD_BOUNDARY n a r ɯ WORD_BOUNDARY n o WORD_BOUNDARY w a WORD_BOUNDARY n a n i WORD_BOUNDARY g a WORD_BOUNDARY m ɯ z ɯ k a ʃ i k ɯ WORD_BOUNDARY n a r ɯ WORD_BOUNDARY n o WORD_BOUNDARY
m u z u k a s h i k u WORD_BOUNDARY n a r u WORD_BOUNDARY n o WORD_BOUNDARY w a WORD_BOUNDARY n a n i WORD_BOUNDARY g a WORD_BOUNDARY m u z u k a s h i k u WORD_BOUNDARY n a r u WORD_BOUNDARY n o WORD_BOUNDARY