Letter on position 1 (r) changed: 13 words bams cams dams gams hams jams lams mams nams pams sams tams yams Letter on position 2 (a) changed: 4 words rems rims roms rums Letter on position 3 (m) changed: 8 words rads rags rahs rais raps rats raws rays Letter on position 4 (s) changed: 2 words rami ramp