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

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

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