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

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

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