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

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

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