C11112331312111112111133133313331333133313123313331322132313231323121   >>    C1111233131211111211113313331333133313331312331333132213231323132312   <<    C11112331312111112111133133313331333133313123313331322132313231323123   >>      C11112331312111112111133133313331333133313123313331322132313231323122   >>