C11111333133313232233133313331333133313331312111112111112233231   >>    C1111133313331323223313331333133313331333131211111211111223323   <<    C11111333133313232233133313331333133313331312111112111112233233   >>      C11111333133313232233133313331333133313331312111112111112233232   >>