C11112331312111112111133133313331333133313123313331331123231323223313332231211   >>    C1111233131211111211113313331333133313331312331333133112323132322331333223121   <<    C11112331312111112111133133313331333133313123313331331123231323223313332231213   >>      C11112331312111112111133133313331333133313123313331331123231323223313332231212   >>