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

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

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