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

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

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