-- your code goes here
 
 
CREATE TABLE user
    (`id` int)
;
 
INSERT INTO user
    (`id`)
VALUES
    (1),
    (2),
    (3),
    (4),
    (5),
    (6)
;
 
 
CREATE TABLE page
    (`id` int)
;
 
INSERT INTO page
    (`id`)
VALUES
    (1),
    (2),
    (3),
    (4),
    (5),
    (6)
;
 
 
CREATE TABLE follows
    (`user_id` int, `page_id` int)
;
 
INSERT INTO follows
    (`user_id`, `page_id`)
VALUES
    (2, 3),
    (3, 1),
    (1, 2),
    (1, 1),
    (3, 4)
;
 
select user.id as userid, page.id as pageid 
  from user, page 
  where pageid not in(select page_id from follows where user_id = userid)

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