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

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

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