ano ookiku natta koto
ano ookiku natta koto .
a n o WORD_BOUNDARY oː k i k ɯ WORD_BOUNDARY n a t t a WORD_BOUNDARY k o t o WORD_BOUNDARY
a n o WORD_BOUNDARY o o k i k u WORD_BOUNDARY n a t t a WORD_BOUNDARY k o t o WORD_BOUNDARY