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

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

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