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

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

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