C11112331312111112111133133313331333133313123313331333223311331   >>    C1111233131211111211113313331333133313331312331333133322331133   <<    C11112331312111112111133133313331333133313123313331333223311333   >>      C11112331312111112111133133313331333133313123313331333223311332   >>