How many cases did Justices Ginsburg and Alito not both participate?
return cases ;return #1 that Justices Ginsburg participate ;return #1 that Justices Alito participate ;return #1 besides  #2 ;return #4 besides  #3 ;return number of  #5
['select', 'filter', 'filter', 'discard', 'discard', 'aggregate']