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

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

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