What is the total number of wins of the club with a goal difference less than 21, 4 draws, and less than 21 losses?
CREATE TABLE "group_ii" (
  "position" real,
  "club" text,
  "played" real,
  "points" real,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "goal_difference" real
);
SELECT COUNT("wins") FROM "group_ii" WHERE "goal_difference"<21 AND "draws"=4 AND "losses"<21;