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

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

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