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

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

*GRAMMAR*
kiki -> RED 
 wif -> YELLOW 
 fep -> GREEN 
 lug -> PURPLE 
 x1 dax -> [x1] [x1] [x1] [x1] [x1] 
 u1 zup u2 -> [u1] [u2] 
 u1 gazzer u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 