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

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

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