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

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

*GRAMMAR*
wif -> GREEN 
 kiki -> BLUE 
 blicket -> YELLOW 
 dax -> RED 
 u1 fep u2 -> [u1] [u2] 
 x1 lug x2 -> [x1] [x2] 
 x1 zup -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 