C11111333133313232233133313331333133112111112113313332211312131   >>    C1111133313331323223313331333133313311211111211331333221131213   <<    C11111333133313232233133313331333133112111112113313332211312133   >>      C11111333133313232233133313331333133112111112113313332211312132   >>