Letter on position 1 (b) changed: 8 words dunk funk gunk hunk junk lunk punk sunk Letter on position 2 (u) changed: 3 words bank bink bonk Letter on position 3 (n) changed: 5 words buck buik bulk burk busk Letter on position 4 (k) changed: 6 words buna bund bung bunn buns bunt