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

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

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