C111112111133131121133133313331333133313331322331311331333231323311   >>    C11111211113313112113313331333133313331333132233131133133323132331   <<    C111112111133131121133133313331333133313331322331311331333231323313   >>      C111112111133131121133133313331333133313331322331311331333231323312   >>