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

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

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