Letter on position 1 (r) changed: 8 words busts dusts fusts gusts justs lusts musts ousts Letter on position 2 (u) changed: 2 words rests rosts Letter on position 3 (s) changed: 1 word runts Letter on position 4 (t) changed: 3 words rusas ruses rusks Letter on position 5 (s) changed: 1 word rusty