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

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

*GRAMMAR*
tufa -> YELLOW 
 lug -> BLUE 
 gazzer -> GREEN 
 dax -> RED 
 x1 zup x2 -> [x2] [x1] 
 u1 fep u2 -> [u2] [u1] 
 u1 kiki -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 