Letter on position 1 (c) changed: 9 words barns darns earns harns karns larns tarns warns yarns Letter on position 2 (a) changed: 2 words corns curns Letter on position 3 (r) changed: 2 words cains canns Letter on position 4 (n) changed: 8 words carbs cards cares carks carls carps carrs carts Letter on position 5 (s) changed: 1 word carny