C11112331312111112111133133313331333133313331333133313331333132211313231   >>    C1111233131211111211113313331333133313331333133313331333133313221131323   <<    C11112331312111112111133133313331333133313331333133313331333132211313233   >>      C11112331312111112111133133313331333133313331333133313331333132211313232   >>