Letter on position 1 (c) changed: 13 words bams dams gams hams jams lams mams nams pams rams sams tams yams Letter on position 2 (a) changed: 2 words coms cwms Letter on position 3 (m) changed: 10 words caas cabs cads cags cans caps cars cats caws cays Letter on position 4 (s) changed: 4 words cama came camo camp