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

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

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