Correct

祖祖辈辈

/ zǔ zǔbèi bèi / 
Strokes

Definition

for generations/from generation to generation

Example

As a Noun

generations

1
Wǒjiā
我家
zǔzǔbèibèi
祖祖辈辈
dōu
都
shì
是
nóngmín
农民
  
。

My family have been farmers for generations.