C111123313121111121111331333133313331322121111331333133313331312323232311   >>    C11112331312111112111133133313331333132212111133133313331333131232323231   <<    C111123313121111121111331333133313331322121111331333133313331312323232313   >>      C111123313121111121111331333133313331322121111331333133313331312323232312   >>