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

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

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