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

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

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