Letter on position 1 (n) changed: 14 words bads cads dads fads gads hads lads mads pads rads sads tads wads yads Letter on position 2 (a) changed: 3 words neds nids nods Letter on position 3 (d) changed: 8 words nabs nags nams nans naos naps nats nays Letter on position 4 (s) changed: 1 word nada