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

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

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