C11112331312111112111133133313331333133313123313331331121332233132211   >>    C1111233131211111211113313331333133313331312331333133112133223313221   <<    C11112331312111112111133133313331333133313123313331331121332233132213   >>      C11112331312111112111133133313331333133313123313331331121332233132212   >>