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

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

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