Letter on position 1 (b) changed: 3 words lurk murk turk Letter on position 2 (u) changed: 4 words bark berk birk bork Letter on position 3 (r) changed: 5 words buck buik bulk bunk busk Letter on position 4 (k) changed: 10 words bura burb burd burg burl burn burp burr burs bury