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

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

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