Letter on position 1 (p) changed: 12 words bents cents dents fents gents hents kents rents sents tents vents wents Letter on position 2 (e) changed: 4 words pants pints ponts punts Letter on position 3 (n) changed: 4 words peats pelts perts pests Letter on position 4 (t) changed: 4 words pends penes penis penks