Letter on position 1 (p) changed: 5 words bacs lacs macs sacs vacs Letter on position 2 (a) changed: 2 words pecs pics Letter on position 3 (c) changed: 13 words pads pahs pais pals pams pans paps pars pass pats pavs paws pays Letter on position 4 (s) changed: 6 words paca pace pack paco pact pacy