C11112331312111112111133133313331333133313123313331331123231323223313331221   >>    C1111233131211111211113313331333133313331312331333133112323132322331333122   <<    C11112331312111112111133133313331333133313123313331331123231323223313331223   >>      C11112331312111112111133133313331333133313123313331331123231323223313331222   >>