Letter on position 1 (b) changed: 8 words cors dors hors jors kors mors tors vors Letter on position 2 (o) changed: 2 words bars burs Letter on position 3 (r) changed: 13 words boas bobs bods bogs bohs bois boks boos bops boss bots bows boys Letter on position 4 (s) changed: 7 words bora bord bore bork borm born bort