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

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

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