C11111333133313232233133313331333133112111112113313331311311231211   >>    C1111133313331323223313331333133313311211111211331333131131123121   <<    C11111333133313232233133313331333133112111112113313331311311231213   >>      C11111333133313232233133313331333133112111112113313331311311231212   >>