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

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

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