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

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

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