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

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

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