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

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

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