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

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

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