Letter on position 1 (a) changed: 15 words bits cits dits fits gits hits kits lits nits pits rits sits tits wits zits Letter on position 2 (i) changed: 5 words acts alts ants apts arts Letter on position 3 (t) changed: 6 words aias aids ails aims ains airs Letter on position 4 (s) changed: 1 word aitu