C11111333133313232233133313331333133112111112113313331311221123231322232131   >>    C1111133313331323223313331333133313311211111211331333131122112323132223213   <<    C11111333133313232233133313331333133112111112113313331311221123231322232133   >>      C11111333133313232233133313331333133112111112113313331311221123231322232132   >>