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

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

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