Letter on position 1 (c) changed: 13 words bars ears fars gars jars lars mars oars pars sars tars vars wars Letter on position 2 (a) changed: 2 words cors curs Letter on position 3 (r) changed: 10 words caas cabs cads cags cams cans caps cats caws cays Letter on position 4 (s) changed: 9 words carb card care cark carl carn carp carr cart