Letter on position 1 (s) changed: 13 words bams cams dams gams hams jams lams mams nams pams rams tams yams Letter on position 2 (a) changed: 3 words sims soms sums Letter on position 3 (m) changed: 13 words sabs sacs sads sags sais sals sans saps sars sass savs saws says Letter on position 4 (s) changed: 3 words sama same samp