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

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

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