a koko ni atta gomen
a koko ni atta gomen .
a WORD_BOUNDARY k o k o WORD_BOUNDARY n i WORD_BOUNDARY a t t a WORD_BOUNDARY g o m e n WORD_BOUNDARY
a WORD_BOUNDARY k o k o WORD_BOUNDARY n i WORD_BOUNDARY a t t a WORD_BOUNDARY g o m e n WORD_BOUNDARY