Letter on position 1 (b) changed: 8 words danks fanks hanks lanks ranks tanks wanks yanks Letter on position 2 (a) changed: 3 words binks bonks bunks Letter on position 3 (n) changed: 5 words backs balks barks basks bauks Letter on position 4 (k) changed: 6 words bancs bands banes bangs banns bants