*SUPPORT*
IN: zup dax blicket zup gazzer tufa OUT: YELLOW RED RED PINK RED PINK
IN: kiki OUT: BLUE
IN: tufa kiki gazzer tufa blicket kiki OUT: BLUE YELLOW YELLOW BLUE YELLOW YELLOW BLUE
IN: tufa OUT: YELLOW
IN: kiki gazzer dax gazzer kiki OUT: BLUE PINK BLUE
IN: dax blicket zup OUT: RED PINK PINK
IN: zup tufa wif kiki OUT: RED YELLOW BLUE BLUE
IN: zup OUT: RED
IN: kiki wif tufa OUT: BLUE YELLOW YELLOW
IN: dax OUT: PINK
IN: dax gazzer zup OUT: RED PINK
IN: dax dax gazzer zup OUT: RED PINK PINK
IN: tufa blicket zup OUT: RED YELLOW YELLOW
IN: kiki dax blicket tufa wif zup gazzer kiki OUT: BLUE YELLOW RED RED BLUE PINK BLUE PINK

*QUERY*
IN: tufa kiki wif zup wif zup OUT: YELLOW BLUE RED RED RED RED
IN: kiki dax gazzer dax OUT: PINK BLUE PINK
IN: tufa gazzer tufa OUT: YELLOW YELLOW
IN: zup wif zup wif zup OUT: RED RED RED RED RED
IN: tufa wif kiki gazzer zup wif dax OUT: RED YELLOW BLUE BLUE PINK PINK
IN: kiki gazzer tufa OUT: YELLOW BLUE
IN: zup dax gazzer kiki OUT: BLUE RED PINK
IN: zup blicket zup dax tufa OUT: RED PINK YELLOW RED RED
IN: zup wif kiki OUT: RED BLUE BLUE
IN: kiki tufa wif dax gazzer kiki OUT: BLUE BLUE YELLOW PINK PINK

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