C11111333133313232233133313331333132313331323321313331333133313112111323321311   >>    C1111133313331323223313331333133313231333132332131333133313331311211132332131   <<    C11111333133313232233133313331333132313331323321313331333133313112111323321313   >>      C11111333133313232233133313331333132313331323321313331333133313112111323321312   >>