tate ni irereba hairanai
tate ni irereba hairanai ?
t a t e WORD_BOUNDARY n i WORD_BOUNDARY i r e r e b a WORD_BOUNDARY h a i r a n a i WORD_BOUNDARY
t a t e WORD_BOUNDARY n i WORD_BOUNDARY i r e r e b a WORD_BOUNDARY h a i r a n a i WORD_BOUNDARY