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

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

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