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

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

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