Letter on position 1 (r) changed: 14 words bads cads dads fads gads hads lads mads nads pads sads tads wads yads Letter on position 2 (a) changed: 4 words reds rids rods ruds Letter on position 3 (d) changed: 8 words rags rahs rais rams raps rats raws rays Letter on position 4 (s) changed: 1 word rade