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

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

*GRAMMAR*
tufa -> BLUE 
 dax -> PURPLE 
 zup -> YELLOW 
 fep -> RED 
 x1 wif x2 -> [x1] [x2] 
 u1 gazzer u2 -> [u1] [u2] 
 x1 kiki -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 