*SUPPORT*
IN: gazzer fep kiki wif OUT: RED BLUE RED RED BLUE RED
IN: kiki fep zup wif OUT: PINK RED PINK PINK RED PINK
IN: zup OUT: PINK
IN: zup fep gazzer OUT: BLUE PINK BLUE
IN: tufa OUT: YELLOW
IN: tufa gazzer zup lug gazzer OUT: YELLOW BLUE BLUE PINK
IN: gazzer lug kiki OUT: RED BLUE
IN: kiki wif OUT: RED RED
IN: gazzer lug kiki wif OUT: RED BLUE RED BLUE
IN: kiki fep kiki wif OUT: RED RED RED RED RED RED
IN: kiki lug zup OUT: PINK RED
IN: kiki lug gazzer OUT: BLUE RED
IN: tufa fep kiki OUT: RED YELLOW RED
IN: zup fep kiki OUT: RED PINK RED

*QUERY*
IN: tufa lug kiki OUT: RED YELLOW
IN: gazzer lug tufa wif OUT: YELLOW BLUE YELLOW BLUE
IN: tufa lug zup OUT: PINK YELLOW
IN: zup tufa OUT: PINK YELLOW
IN: tufa lug tufa OUT: YELLOW YELLOW
IN: kiki OUT: RED
IN: gazzer OUT: BLUE
IN: zup fep zup OUT: PINK PINK PINK
IN: kiki lug kiki OUT: RED RED
IN: zup fep tufa OUT: YELLOW PINK YELLOW

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