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

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

*GRAMMAR*
kiki -> BLUE 
 dax -> RED 
 zup -> YELLOW 
 lug -> GREEN 
 x1 wif x2 -> [x1] [x2] [x2] [x1] [x2] 
 x1 tufa -> [x1] [x1] 
 u1 fep u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 