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

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

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