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

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

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