C11111333133313232233133313331333132313331323321313331333132313231232311   >>    C1111133313331323223313331333133313231333132332131333133313231323123231   <<    C11111333133313232233133313331333132313331323321313331333132313231232313   >>      C11111333133313232233133313331333132313331323321313331333132313231232312   >>