Which Rank has a Lost smaller than 12, and a Played larger than 20, and an Avg Points larger than 1.73?
CREATE TABLE "all_time_ranking_in_the_championship_pla" (
  "rank" real,
  "club" text,
  "seasons" real,
  "played" real,
  "drew" real,
  "lost" real,
  "points" real,
  "avg_points" real,
  "goals_for" real,
  "goals_against" real,
  "goal_diff" real
);
SELECT MAX("rank") FROM "all_time_ranking_in_the_championship_pla" WHERE "lost"<12 AND "played">20 AND "avg_points">1.73;