C11111333133313232233133313331333133112111112113313332313231323121   >>    C1111133313331323223313331333133313311211111211331333231323132312   <<    C11111333133313232233133313331333133112111112113313332313231323123   >>      C11111333133313232233133313331333133112111112113313332313231323122   >>