C11111333133313232233133313331333133112111112113313331311331333132322231123231   >>    C1111133313331323223313331333133313311211111211331333131133133313232223112323   <<    C11111333133313232233133313331333133112111112113313331311331333132322231123233   >>      C11111333133313232233133313331333133112111112113313331311331333132322231123232   >>