Letter on position 1 (d) changed: 11 words buds cuds fuds juds luds muds ouds puds ruds suds wuds Letter on position 2 (u) changed: 2 words dads dods Letter on position 3 (d) changed: 6 words dubs dues dugs duns duos dups Letter on position 4 (s) changed: 1 word dude