C312312111133131212111133133313231333133313331331121111331133133313223122321   >>    C31231211113313121211113313331323133313331333133112111133113313331322312232   <<    C312312111133131212111133133313231333133313331331121111331133133313223122323   >>      C312312111133131212111133133313231333133313331331121111331133133313223122322   >>