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

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

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