C11111333133313232233133313331333133112111112113313331311331323123231323311   >>    C1111133313331323223313331333133313311211111211331333131133132312323132331   <<    C11111333133313232233133313331333133112111112113313331311331323123231323313   >>      C11111333133313232233133313331333133112111112113313331311331323123231323312   >>