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

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

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