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

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

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