Letter on position 1 (w) changed: 10 words basted casted easted fasted gasted hasted lasted masted pasted tasted Letter on position 2 (a) changed: 2 words wested wisted Letter on position 3 (s) changed: 4 words wafted waited wanted warted Letter on position 4 (t) changed: 1 word washed Letter on position 6 (d) changed: 3 words wastel waster wastes