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

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

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