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

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

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