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

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

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