Which Loss has a Last 5 of 4-1, a Streak of w2, and a PA per game smaller than 88.43?
CREATE TABLE "2009_nbl_ladder_championship_round" (
  "rank" real,
  "team" text,
  "played" real,
  "loss" real,
  "last_5" text,
  "streak" text,
  "pf_per_game" real,
  "pa_per_game" real,
  "pd_per_game" real,
  "winning_pct" text
);
SELECT AVG("loss") FROM "2009_nbl_ladder_championship_round" WHERE "last_5"='4-1' AND "streak"='w2' AND "pa_per_game"<88.43;