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

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

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