oboetenai Totto wa doo yatte yatteta ka
oboetenai totto wa doo yatte yatteta ka ?
o b o e t e n a i WORD_BOUNDARY t o t t o WORD_BOUNDARY w a WORD_BOUNDARY d oː WORD_BOUNDARY j a t t e WORD_BOUNDARY j a t t e t a WORD_BOUNDARY k a WORD_BOUNDARY
o b o e t e n a i WORD_BOUNDARY t o t t o WORD_BOUNDARY w a WORD_BOUNDARY d o o WORD_BOUNDARY y a t t e WORD_BOUNDARY y a t t e t a WORD_BOUNDARY k a WORD_BOUNDARY