Can we combine the 6 days of Shawwal with the missed fasts of Ramadan?

It is not permissible to fast the six Days of Shawwal before a Fast of Expiation
It is not permissible to fast the six Days of Shawwal before a Fast of Expiation

It is not permissible to fast the six Days of Shawwal before a Fast of Expiation Question :A man owed expiation of fast...