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

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

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