648.63—How can the institutional matching contribution be used?
        
        (1) 
         Provide additional fellowships to graduate students who are not already receiving fellowships under this part and who satisfy the requirements of  § 648.40 ;
    
    
    
        
        (3) 
         Pay for costs of providing a fellow's instruction that are not included in the tuition or fees paid to the institution in which the fellow is enrolled; and
    
    
        
        (4) 
         Supplement the stipend received by a fellow under  § 648.51 in an amount not to exceed a fellow's financial need.
    
    
        
        (b) 
         An institution may not use its institutional matching contribution to fund fellowships that were funded by the institution prior to the award of the grant.