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

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

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