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

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

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