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

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

*GRAMMAR*
wif -> GREEN 
 lug -> YELLOW 
 kiki -> RED 
 dax -> BLUE 
 x1 fep u1 -> [x1] [u1] [u1] 
 x1 gazzer x2 -> [x2] [x1] [x1] [x2] [x1] [x1] [x2] 
 x1 zup -> [x1] [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 