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

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

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