C11111333133313232233133313331333133112111112113313331311331333121111333131   >>    C1111133313331323223313331333133313311211111211331333131133133312111133313   <<    C11111333133313232233133313331333133112111112113313331311331333121111333133   >>      C11111333133313232233133313331333133112111112113313331311331333121111333132   >>