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

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

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