*SUPPORT*
IN: tufa blicket gazzer tufa OUT: RED RED BLUE
IN: blicket gazzer lug OUT: GREEN BLUE
IN: tufa gazzer tufa OUT: RED RED
IN: blicket tufa tufa gazzer kiki OUT: BLUE RED YELLOW RED
IN: blicket OUT: BLUE
IN: lug fep kiki OUT: YELLOW GREEN
IN: tufa fep lug OUT: GREEN RED
IN: lug kiki lug lug OUT: GREEN YELLOW GREEN GREEN
IN: kiki fep lug OUT: GREEN YELLOW
IN: lug kiki dax OUT: GREEN YELLOW YELLOW YELLOW
IN: lug dax OUT: GREEN GREEN GREEN
IN: lug gazzer kiki OUT: YELLOW GREEN
IN: blicket gazzer kiki OUT: YELLOW BLUE
IN: blicket dax OUT: BLUE BLUE BLUE

*QUERY*
IN: tufa OUT: RED
IN: kiki OUT: YELLOW
IN: blicket kiki kiki fep tufa OUT: BLUE YELLOW RED YELLOW
IN: kiki dax OUT: YELLOW YELLOW YELLOW
IN: tufa dax OUT: RED RED RED
IN: tufa fep kiki OUT: YELLOW RED
IN: lug OUT: GREEN
IN: kiki gazzer blicket OUT: BLUE YELLOW
IN: kiki lug dax OUT: YELLOW GREEN GREEN GREEN
IN: lug fep tufa OUT: RED GREEN

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