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

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

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