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

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

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