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

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

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