C11112331312111112111133133313331333133313331333133313113313231123313121   >>    C1111233131211111211113313331333133313331333133313331311331323112331312   <<    C11112331312111112111133133313331333133313331333133313113313231123313123   >>      C11112331312111112111133133313331333133313331333133313113313231123313122   >>