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

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

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