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

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

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