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

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

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