Letter on position 1 (b) changed: 16 words ains dins fins gins hins jins kins lins pins rins sins tins vins wins yins zins Letter on position 2 (i) changed: 3 words bans bens buns Letter on position 3 (n) changed: 6 words bias bibs bids bigs bios bits Letter on position 4 (s) changed: 5 words bind bine bing bink bint