Letter on position 1 (b) changed: 7 words colled dolled jolled lolled polled rolled tolled Letter on position 2 (o) changed: 4 words balled belled billed bulled Letter on position 3 (l) changed: 3 words boiled booled bowled Letter on position 4 (l) changed: 1 word bolted Letter on position 6 (d) changed: 1 word bollen