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

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

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