Letter on position 1 (b) changed: 8 words darred farred garred jarred marred parred tarred warred Letter on position 2 (a) changed: 2 words birred burred Letter on position 4 (r) changed: 6 words barbed barded barfed barged barked barned Letter on position 6 (d) changed: 4 words barrel barren barres barret