What is the plural preterite that is associated with a subjunctive preterite of ü and has an infinitive stem of e + l/r + cons.?
CREATE TABLE "strong_verb_vowel_alternation_table" (
  "inf_stem" text,
  "sing_pres" text,
  "plur_pres" text,
  "sing_pret" text,
  "plur_pret" text,
  "subj_pres" text,
  "subj_pret" text,
  "past_part" text
);
SELECT "plur_pret" FROM "strong_verb_vowel_alternation_table" WHERE "subj_pret"='ü' AND "inf_stem"='e + l/r + cons.';