C11111333133313232233133313331333133112111112113313331312313232233113121   >>    C1111133313331323223313331333133313311211111211331333131231323223311312   <<    C11111333133313232233133313331333133112111112113313331312313232233113123   >>      C11111333133313232233133313331333133112111112113313331312313232233113122   >>