C11111333133313232233133313331333133112111112113313331311222131   >>    C1111133313331323223313331333133313311211111211331333131122213   <<    C11111333133313232233133313331333133112111112113313331311222133   >>      C11111333133313232233133313331333133112111112113313331311222132   >>