C31231211113313121211113313331333133313311211331333133323213221211   >>    C3123121111331312121111331333133313331331121133133313332321322121   <<    C31231211113313121211113313331333133313311211331333133323213221213   >>      C31231211113313121211113313331333133313311211331333133323213221212   >>