C31231211113313121211113313331333133313311211331333133313331311313232321   >>    C3123121111331312121111331333133313331331121133133313331333131131323232   <<    C31231211113313121211113313331333133313311211331333133313331311313232323   >>      C31231211113313121211113313331333133313311211331333133313331311313232322   >>