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

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

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