C312312111133131212111133133313231333133313331331121111331322223321   >>    C31231211113313121211113313331323133313331333133112111133132222332   <<    C312312111133131212111133133313231333133313331331121111331322223323   >>      C312312111133131212111133133313231333133313331331121111331322223322   >>