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

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

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