koko koko ga itai no
koko koko ga itai no .
k o k o WORD_BOUNDARY k o k o WORD_BOUNDARY g a WORD_BOUNDARY i t a i WORD_BOUNDARY n o WORD_BOUNDARY
k o k o WORD_BOUNDARY k o k o WORD_BOUNDARY g a WORD_BOUNDARY i t a i WORD_BOUNDARY n o WORD_BOUNDARY