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

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

*GRAMMAR*
dax -> YELLOW 
 kiki -> RED 
 wif -> GREEN 
 tufa -> PURPLE 
 u1 zup u2 -> [u2] [u1] 
 u1 gazzer -> [u1] [u1] 
 x1 lug x2 -> [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 