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

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

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