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

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

*GRAMMAR*
lug -> YELLOW 
 tufa -> BLUE 
 zup -> GREEN 
 dax -> RED 
 u1 blicket x1 -> [u1] [x1] [x1] 
 x1 gazzer x2 -> [x2] [x1] 
 x1 wif -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 