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

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

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