Letter on position 1 (m) changed: 6 words buses fuses puses ruses suses wuses Letter on position 2 (u) changed: 4 words mases meses mises moses Letter on position 3 (s) changed: 4 words mules mures mutes muxes Letter on position 4 (e) changed: 3 words musks musos musts Letter on position 5 (s) changed: 3 words mused muser muset