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

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

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