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

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

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