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

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

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