C11111333133313232233133313331333133112111112113313331312111113331333121311211   >>    C1111133313331323223313331333133313311211111211331333131211111333133312131121   <<    C11111333133313232233133313331333133112111112113313331312111113331333121311213   >>      C11111333133313232233133313331333133112111112113313331312111113331333121311212   >>