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

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

*GRAMMAR*
zup -> YELLOW 
 fep -> RED 
 kiki -> GREEN 
 dax -> PURPLE 
 u1 gazzer u2 -> [u2] [u1] 
 x1 wif x2 -> [x2] [x1] 
 u1 lug u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 