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

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

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