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

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

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