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

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

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