Mary owns 60% of Greenlines stock and Marcus owns the other 40%. On January 1, 2020, Mary had a stock basis of $3,000 and Marcus had a stock basis of $2,000. In 2020, Mary received a distribution of $6,000 and Marcus received a distribution of $4,000. Calculate each stockholder's basis at the end of 2020, and the amount of suspended losses (if any) for each shareholder