已经有17本了
Grug and the rainbow
Grug and the big red apple
Grug has a birtday
Grug learns to dance
Grug and his bicycle
Grug learns to cook
Grug builds a car
Grug learns to swim
Grug and his first Christmas
The green paint
Grug
His music
Go to hospital
His garden
At the zoo
learns to fly
friend