Letter on position 1 (c) changed: 10 words dabs fabs gabs jabs kabs labs nabs sabs tabs wabs Letter on position 2 (a) changed: 2 words cobs cubs Letter on position 3 (b) changed: 10 words caas cads cags cams cans caps cars cats caws cays Letter on position 4 (s) changed: 1 word caba