C312312111111331312111133133313231333133313112331333133313331333132213331123311   >>    C31231211111133131211113313331323133313331311233133313331333133313221333112331   <<    C312312111111331312111133133313231333133313112331333133313331333132213331123313   >>      C312312111111331312111133133313231333133313112331333133313331333132213331123312   >>