Letter on position 1 (p) changed: 13 words bans cans dans eans fans gans kans mans nans sans tans vans wans Letter on position 2 (a) changed: 4 words pens pins pons puns Letter on position 3 (n) changed: 13 words pacs pads pahs pais pals pams paps pars pass pats pavs paws pays Letter on position 4 (s) changed: 4 words pand pane pang pant