C31231211113313121211113313331333133313311211331333133313113133313223111   >>    C3123121111331312121111331333133313331331121133133313331311313331322311   <<    C31231211113313121211113313331333133313311211331333133313113133313223113   >>      C31231211113313121211113313331333133313311211331333133313113133313223112   >>