C312312111133131212111133133313231333133313331331123232133313331323123231   >>    C31231211113313121211113313331323133313331333133112323213331333132312323   <<    C312312111133131212111133133313231333133313331331123232133313331323123233   >>      C312312111133131212111133133313231333133313331331123232133313331323123232   >>