C11111333133313232233133313331333132313331323321313331333133311113313232311   >>    C1111133313331323223313331333133313231333132332131333133313331111331323231   <<    C11111333133313232233133313331333132313331323321313331333133311113313232313   >>      C11111333133313232233133313331333132313331323321313331333133311113313232312   >>