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

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

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