Letter on position 1 (s) changed: 16 words ains bins dins fins gins hins jins kins lins pins rins tins vins wins yins zins Letter on position 2 (i) changed: 4 words sans sens sons suns Letter on position 3 (n) changed: 8 words sibs sics sies sims sips sirs siss sits Letter on position 4 (s) changed: 5 words sind sine sing sinh sink