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

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

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