Letter on position 1 (c) changed: 8 words buller duller fuller guller huller luller muller puller Letter on position 2 (u) changed: 1 word caller Letter on position 3 (l) changed: 2 words curler cutler Letter on position 4 (l) changed: 2 words culter culver Letter on position 6 (r) changed: 2 words culled cullet