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

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

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