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

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

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