Letter on position 1 (c) changed: 16 words bats eats fats gats hats kats lats mats nats oats pats qats rats tats vats wats Letter on position 2 (a) changed: 3 words cits cots cuts Letter on position 3 (t) changed: 10 words caas cabs cads cags cams cans caps cars caws cays Letter on position 4 (s) changed: 1 word cate