hikooki wa doo natta n
hikooki wa doo natta n .
h i k oː k i WORD_BOUNDARY w a WORD_BOUNDARY d oː WORD_BOUNDARY n a t t a WORD_BOUNDARY n WORD_BOUNDARY
h i k o o k i WORD_BOUNDARY w a WORD_BOUNDARY d o o WORD_BOUNDARY n a t t a WORD_BOUNDARY n WORD_BOUNDARY