It must be allowed to have the same pair, otherwise it will definitely fool other cards, such as two cups.

Yi Qing 2222334455777 Listen to 567

All colors 2222445566777 Listen to 37

22223344557 plus any pair (different colors), listen to 67.

You can play other cards, 2233445566778 (listen to 258)

2233445567788 (Listen to 69)

These two are seven pairs in a row in the national standard, but in Japan hemp can only be counted as two cups three times, not all of them are big. (Japanese hemp seven is smaller than two cups, and it must be a different pair)