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

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

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