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

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

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