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

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

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