C11111333133313232233133313331333133112111112113313331311331322133311211311   >>    C1111133313331323223313331333133313311211111211331333131133132213331121131   <<    C11111333133313232233133313331333133112111112113313331311331322133311211313   >>      C11111333133313232233133313331333133112111112113313331311331322133311211312   >>