C11111333133313232233133313331333132313331323321313331321123232311   >>    C1111133313331323223313331333133313231333132332131333132112323231   <<    C11111333133313232233133313331333132313331323321313331321123232313   >>      C11111333133313232233133313331333132313331323321313331321123232312   >>