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

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

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