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

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

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