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

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

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