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

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

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