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

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

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