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

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

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