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

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

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