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

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

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