Letter on position 1 (p) changed: 10 words basts casts easts fasts gasts lasts masts oasts vasts wasts Letter on position 2 (a) changed: 2 words pests posts Letter on position 3 (s) changed: 3 words pacts pants parts Letter on position 4 (t) changed: 1 word pases Letter on position 5 (s) changed: 3 words pasta paste pasty