Letter on position 1 (f) changed: 8 words cists gists hists kists lists mists sists wists Letter on position 2 (i) changed: 3 words fasts fests fusts Letter on position 3 (s) changed: 2 words fiats fitts Letter on position 4 (t) changed: 2 words fiscs fisks Letter on position 5 (s) changed: 1 word fisty