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

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

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