Letter on position 1 (p) changed: 13 words bark cark dark hark jark kark lark mark nark rark sark wark yark Letter on position 2 (a) changed: 2 words perk pork Letter on position 3 (r) changed: 3 words pack paik pawk Letter on position 4 (k) changed: 7 words para pard pare parp parr pars part