Letter on position 1 (b) changed: 11 words ducks fucks gucks hucks lucks mucks pucks rucks sucks tucks yucks Letter on position 2 (u) changed: 3 words backs becks bocks Letter on position 3 (c) changed: 5 words buiks bulks bunks burks busks Letter on position 5 (s) changed: 2 words bucko bucku