C111123313121111121111331333133313331322121111331333133313331323311232311   >>    C11112331312111112111133133313331333132212111133133313331333132331123231   <<    C111123313121111121111331333133313331322121111331333133313331323311232313   >>      C111123313121111121111331333133313331322121111331333133313331323311232312   >>