In 1972, what was the highest number of points with a Ford engine and an entrant of Brooke Bond Oxo Team Surtees?
CREATE TABLE "complete_formula_one_results" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "pts" real
);
SELECT MAX("pts") FROM "complete_formula_one_results" WHERE "engine"='ford' AND "entrant"='brooke bond oxo team surtees' AND "year"=1972;