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

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

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