CREATE TABLE table_name_9 (inverse_subjunctive VARCHAR, imperative VARCHAR, subjunctive VARCHAR)

What inverse subjunctive has as the imperative and a subjunctive of se m chadn?
SELECT inverse_subjunctive FROM table_name_9 WHERE imperative = "—" AND subjunctive = "se måchadn"
SELECT "inverse_subjunctive" FROM "table_name_9" WHERE "imperative" = "—" AND "se måchadn" = "subjunctive"