If the front and back side of one of the pads is visible.
return pads ;return front side of #1 ;return back side of #1 ;return #1 where  #2 is visible ;return #4 where  #3 is visible ;return number of  #5 ;return if  #6 is equal to  one
['select', 'project', 'project', 'comparative', 'comparative', 'aggregate', 'boolean']