kuraku natta toki nani
kuraku natta toki nani ?
k ɯ r a k ɯ WORD_BOUNDARY n a t t a WORD_BOUNDARY t o k i WORD_BOUNDARY n a n i WORD_BOUNDARY
k u r a k u WORD_BOUNDARY n a t t a WORD_BOUNDARY t o k i WORD_BOUNDARY n a n i WORD_BOUNDARY