Recently, during an exclusive interview with Ai Fukuhara, a reporter from China News Service played an interesting interactive game with Ai Fukuhara to test the "level" of Ai Fukuhara's Tohoku dialect.

Using 9 dialect words in the Tohoku dialect, how many grades can Fukuhara Ai's Tohoku dialect have?

(Reporter Li Xiang produced Sui Zhiyuan)

Editor in charge: 【Luo Pan】