Letter on position 1 (m) changed: 16 words bats cats eats fats gats hats kats lats nats oats pats qats rats tats vats wats Letter on position 2 (a) changed: 3 words mets mots muts Letter on position 3 (t) changed: 14 words maas macs mads maes mags maks mals mams mans maps mars mass maws mays Letter on position 4 (s) changed: 4 words mate math matt maty