aitotte ii to koko wa
aitotte ii to koko wa .
a i t o t t e WORD_BOUNDARY i i WORD_BOUNDARY t o WORD_BOUNDARY k o k o WORD_BOUNDARY w a WORD_BOUNDARY
a i t o t t e WORD_BOUNDARY i i WORD_BOUNDARY t o WORD_BOUNDARY k o k o WORD_BOUNDARY w a WORD_BOUNDARY