CREATE TABLE table_name_81 (goals_conceded INTEGER, played VARCHAR(255), draw VARCHAR(255), points VARCHAR(255))
How many goals were conceded by the team with more than 21 points more than 5 draws and less than 18 games played?
    
SQL: SELECT SUM(goals_conceded) FROM table_name_81 WHERE draw > 5 AND points > 21 AND played < 18