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

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

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