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

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

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