------------------------------------------
  id_post | user_id  | id_post_user      |
------------------------------------------
    1     |    10    |       1           |
------------------------------------------
    2     |    9     |       1           |
------------------------------------------
    3     |    10    |       2           |
------------------------------------------
    4     |    12    |       1           |
------------------------------------------
    5     |    10    |       3           |
------------------------------------------
    6     |    9     |       2           |
------------------------------------------