*SUPPORT*
IN: fep dax zup fep dax OUT: GREEN GREEN GREEN GREEN GREEN GREEN
IN: fep wif dax OUT: GREEN RED RED RED
IN: wif dax OUT: RED RED RED
IN: lug lug lug dax OUT: BLUE BLUE BLUE BLUE BLUE
IN: fep zup blicket gazzer OUT: PURPLE GREEN PURPLE GREEN
IN: lug zup lug gazzer OUT: BLUE BLUE BLUE BLUE
IN: wif OUT: RED
IN: blicket OUT: PURPLE
IN: fep zup lug gazzer zup blicket zup blicket OUT: PURPLE PURPLE BLUE GREEN BLUE GREEN
IN: blicket dax zup blicket OUT: PURPLE PURPLE PURPLE PURPLE
IN: wif wif OUT: RED RED
IN: lug fep OUT: BLUE GREEN
IN: blicket dax OUT: PURPLE PURPLE PURPLE
IN: fep dax OUT: GREEN GREEN GREEN

*QUERY*
IN: lug OUT: BLUE
IN: lug dax OUT: BLUE BLUE BLUE
IN: fep wif fep lug OUT: GREEN RED GREEN BLUE
IN: wif zup blicket dax OUT: PURPLE PURPLE PURPLE RED
IN: wif gazzer OUT: RED RED
IN: fep OUT: GREEN
IN: lug zup lug dax OUT: BLUE BLUE BLUE BLUE
IN: fep blicket dax OUT: GREEN PURPLE PURPLE PURPLE
IN: fep lug dax OUT: GREEN BLUE BLUE BLUE
IN: wif dax gazzer zup lug OUT: BLUE RED RED RED RED RED RED

*GRAMMAR*
wif -> RED 
 fep -> GREEN 
 lug -> BLUE 
 blicket -> PURPLE 
 x1 gazzer -> [x1] [x1] 
 u1 dax -> [u1] [u1] [u1] 
 x1 zup x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 