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

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

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