Letter on position 1 (p) changed: 10 words buts cuts guts huts juts muts nuts outs ruts tuts Letter on position 2 (u) changed: 4 words pats pets pits pots Letter on position 3 (t) changed: 9 words pubs puds pugs puls puns pups purs puss puys Letter on position 4 (s) changed: 2 words putt putz