Letter on position 1 (b) changed: 3 words calked talked walked Letter on position 2 (a) changed: 2 words bilked bulked Letter on position 3 (l) changed: 5 words backed banked barked basked bauked Letter on position 4 (k) changed: 3 words balded balled balmed Letter on position 6 (d) changed: 1 word balker