CREATE TABLE table_name_51 (sing_pres VARCHAR2, sing_pret VARCHAR2, subj_pres VARCHAR2)

What is the singular present that is associated with a singular preterite of ou and a subjunctive present of ie?
SELECT sing_pres FROM table_name_51 WHERE sing_pret = "ou" AND subj_pres = "ie"
SELECT "sing_pres" FROM "table_name_51" WHERE "ie" = "subj_pres" AND "ou" = "sing_pret"