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

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

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