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

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

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