Letter on position 1 (w) changed: 12 words barking carking darking harking karking larking marking narking parking rarking sarking yarking Letter on position 2 (a) changed: 1 word working Letter on position 3 (r) changed: 3 words walking wanking wauking Letter on position 4 (k) changed: 6 words warding warling warming warning warping warring