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

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

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