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

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

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