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

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

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