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

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

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