How many cubes are not gray and not matte?
return cubes ;return #1 that  are gray ;return #1 that  are matte ;return number of #1 ;return number of #2 ;return number of #3 ;return sum of #5 and #6 ;return difference of #4 and #7
['select', 'filter', 'filter', 'aggregate', 'aggregate', 'aggregate', 'arithmetic', 'arithmetic']