C31231211113313121211113313331333133313311211331333133322132323211   >>    C3123121111331312121111331333133313331331121133133313332213232321   <<    C31231211113313121211113313331333133313311211331333133322132323213   >>      C31231211113313121211113313331333133313311211331333133322132323212   >>