CREATE TABLE table_37843 ("Club" TEXT, "Played" TEXT, "Drawn" TEXT, "Lost" TEXT, "Points for" TEXT, "Points against" TEXT, "Tries for" TEXT, "Tries against" TEXT, "Try bonus" TEXT, "Losing bonus" TEXT)

What points has 18 for the played and bala rfc as the club?
SELECT "Points for" FROM table_37843 WHERE "Played" = '18' AND "Club" = 'bala rfc'
SELECT "Points for" FROM "table_37843" WHERE "Club" = 'bala rfc' AND "Played" = '18'