Letter on position 1 (t) changed: 8 words carts darts farts harts karts marts parts warts Letter on position 2 (a) changed: 2 words terts torts Letter on position 3 (r) changed: 5 words tacts taits tatts tauts tawts Letter on position 4 (t) changed: 5 words taras tares tarns taros tarps Letter on position 5 (s) changed: 1 word tarty