Letter on position 1 (g) changed: 13 words book cook dook hook jook kook look mook nook pook rook sook took Letter on position 2 (o) changed: 1 word grok Letter on position 3 (o) changed: 3 words gonk gouk gowk Letter on position 4 (k) changed: 8 words good goof goog gool goon goop goor goos