Letter on position 1 (e) changed: 16 words bats cats fats gats hats kats lats mats nats oats pats qats rats tats vats wats Letter on position 2 (a) changed: 4 words efts elts ests ewts Letter on position 3 (t) changed: 3 words eans ears eaus Letter on position 4 (s) changed: 1 word eath