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

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

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