C1111233131211111211113313331333133313331333132213331333133313331333231323311   >>    C111123313121111121111331333133313331333133313221333133313331333133323132331   <<    C1111233131211111211113313331333133313331333132213331333133313331333231323313   >>      C1111233131211111211113313331333133313331333132213331333133313331333231323312   >>