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

*QUERY*
IN: gazzer kiki lug OUT: PURPLE BLUE PURPLE BLUE
IN: kiki zup lug OUT: BLUE YELLOW BLUE YELLOW
IN: gazzer gazzer zup OUT: PURPLE PURPLE YELLOW
IN: zup OUT: YELLOW
IN: kiki OUT: BLUE
IN: fep OUT: RED
IN: kiki gazzer zup fep OUT: BLUE PURPLE YELLOW RED
IN: fep lug OUT: RED RED
IN: kiki lug lug OUT: BLUE BLUE BLUE BLUE
IN: kiki fep lug OUT: BLUE RED BLUE RED

*GRAMMAR*
gazzer -> PURPLE 
 kiki -> BLUE 
 fep -> RED 
 zup -> YELLOW 
 x1 tufa x2 -> [x2] [x2] [x1] [x2] 
 x1 dax x2 -> [x2] [x1] 
 x1 lug -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 