C11111333133313232233133313331333133112111112113313331312313121   >>    C1111133313331323223313331333133313311211111211331333131231312   <<    C11111333133313232233133313331333133112111112113313331312313123   >>      C11111333133313232233133313331333133112111112113313331312313122   >>