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

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

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