C31231211113313121211113313331333133313311211331333133313331321121221211   >>    C3123121111331312121111331333133313331331121133133313331333132112122121   <<    C31231211113313121211113313331333133313311211331333133313331321121221213   >>      C31231211113313121211113313331333133313311211331333133313331321121221212   >>