CREATE TABLE table_23593 ("Season" TEXT, "Bayernliga" TEXT, "Landesliga S\\u00fcd" TEXT, "Landesliga Mitte" TEXT, "Landesliga Nord" TEXT)

Name the landesliga nord for freier tus regensburg
SELECT "Landesliga Nord" FROM table_23593 WHERE "Landesliga Mitte" = 'Freier TuS Regensburg'
SELECT "Landesliga Nord" FROM "table_23593" WHERE "Landesliga Mitte" = 'Freier TuS Regensburg'