C11112331312111112111133133313331333133313123313331323221211211311   >>    C1111233131211111211113313331333133313331312331333132322121121131   <<    C11112331312111112111133133313331333133313123313331323221211211313   >>      C11112331312111112111133133313331333133313123313331323221211211312   >>