C31231211111133131211113313331323133313113313223133313331333132212211221   >>    C3123121111113313121111331333132313331311331322313331333133313221221122   <<    C31231211111133131211113313331323133313113313223133313331333132212211223   >>      C31231211111133131211113313331323133313113313223133313331333132212211222   >>