C11111333133313232233133313331333133313231333133313331121133232311   >>    C1111133313331323223313331333133313331323133313331333112113323231   <<    C11111333133313232233133313331333133313231333133313331121133232313   >>      C11111333133313232233133313331333133313231333133313331121133232312   >>