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

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

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