C11112331312111112111133133313331333133313331333133313331322331323232311   >>    C1111233131211111211113313331333133313331333133313331333132233132323231   <<    C11112331312111112111133133313331333133313331333133313331322331323232313   >>      C11112331312111112111133133313331333133313331333133313331322331323232312   >>