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

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

*GRAMMAR*
wif -> YELLOW 
 kiki -> PURPLE 
 fep -> RED 
 zup -> BLUE 
 x1 lug x2 -> [x2] [x1] 
 x1 tufa x2 -> [x1] [x2] 
 x1 gazzer x2 -> [x1] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 