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

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

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