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

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

*GRAMMAR*
zup -> BLUE 
 dax -> GREEN 
 kiki -> PURPLE 
 lug -> RED 
 u1 fep u2 -> [u1] [u2] 
 u1 gazzer -> [u1] [u1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 