Letter on position 1 (l) changed: 13 words bams cams dams gams hams jams mams nams pams rams sams tams yams Letter on position 2 (a) changed: 2 words lums lyms Letter on position 3 (m) changed: 12 words labs lacs lads lags lahs laps lars lass lats lavs laws lays Letter on position 4 (s) changed: 4 words lama lamb lame lamp