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

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

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