C11111333133313232233133313331333132332322121111331333132223132311   >>    C1111133313331323223313331333133313233232212111133133313222313231   <<    C11111333133313232233133313331333132332322121111331333132223132313   >>      C11111333133313232233133313331333132332322121111331333132223132312   >>