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

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

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