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

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

*GRAMMAR*
dax -> BLUE 
 lug -> PURPLE 
 wif -> RED 
 tufa -> PINK 
 u1 gazzer u2 -> [u2] [u1] 
 x1 fep x2 -> [x2] [x1] 
 u1 zup -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 