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

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

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