C11111333133313232233133313331333133313331312111112111112132111   >>    C1111133313331323223313331333133313331333131211111211111213211   <<    C11111333133313232233133313331333133313331312111112111112132113   >>      C11111333133313232233133313331333133313331312111112111112132112   >>