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

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

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