Letter on position 1 (h) changed: 8 words carts darts farts karts marts parts tarts warts Letter on position 2 (a) changed: 1 word hurts Letter on position 3 (r) changed: 4 words haets hafts halts hants Letter on position 4 (t) changed: 8 words hards hares harks harls harms harns haros harps