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

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

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