Letter on position 1 (d) changed: 14 words bads cads fads gads hads lads mads nads pads rads sads tads wads yads Letter on position 2 (a) changed: 2 words dods duds Letter on position 3 (d) changed: 12 words dabs daes dags dahs dais daks dals dams dans daps daws days Letter on position 4 (s) changed: 2 words dada dado