Letter on position 1 (p) changed: 13 words bars cars ears fars gars jars lars mars oars sars tars vars wars Letter on position 2 (a) changed: 2 words pirs purs Letter on position 3 (r) changed: 13 words pacs pads pahs pais pals pams pans paps pass pats pavs paws pays Letter on position 4 (s) changed: 7 words para pard pare park parp parr part