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

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

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