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

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

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