Letter on position 1 (h) changed: 8 words belled celled felled gelled jelled melled welled yelled Letter on position 2 (e) changed: 2 words hilled hulled Letter on position 3 (l) changed: 3 words healed heeled heiled Letter on position 4 (l) changed: 3 words helmed helped helved Letter on position 6 (d) changed: 1 word heller