C11111333133313232233133313331333132332313112113313331323123221211   >>    C1111133313331323223313331333133313233231311211331333132312322121   <<    C11111333133313232233133313331333132332313112113313331323123221213   >>      C11111333133313232233133313331333132332313112113313331323123221212   >>