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

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

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