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

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

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