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

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

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