*SUPPORT*
IN: dax fep dax OUT: BLUE BLUE
IN: wif fep dax OUT: RED BLUE
IN: kiki kiki fep wif OUT: YELLOW YELLOW RED
IN: dax tufa fep kiki OUT: BLUE PINK YELLOW
IN: dax fep wif OUT: BLUE RED
IN: wif OUT: RED
IN: tufa fep tufa zup tufa OUT: PINK PINK PINK PINK PINK PINK
IN: wif fep dax zup dax OUT: BLUE RED BLUE RED BLUE BLUE
IN: kiki blicket kiki OUT: YELLOW YELLOW
IN: wif blicket dax kiki blicket tufa OUT: BLUE PINK YELLOW RED
IN: tufa zup tufa fep tufa OUT: PINK PINK PINK PINK PINK PINK
IN: dax OUT: BLUE
IN: dax kiki dax OUT: BLUE YELLOW BLUE
IN: dax blicket kiki OUT: YELLOW BLUE

*QUERY*
IN: kiki dax tufa fep tufa OUT: YELLOW BLUE PINK PINK
IN: dax blicket wif blicket wif fep wif OUT: RED RED RED BLUE
IN: dax blicket dax OUT: BLUE BLUE
IN: wif wif blicket dax zup wif OUT: RED RED BLUE RED RED BLUE RED RED
IN: dax fep kiki OUT: BLUE YELLOW
IN: dax zup tufa OUT: PINK BLUE BLUE PINK
IN: kiki OUT: YELLOW
IN: kiki blicket tufa wif fep kiki OUT: PINK RED YELLOW YELLOW
IN: tufa dax fep kiki OUT: PINK BLUE YELLOW
IN: tufa blicket tufa zup wif fep dax OUT: RED BLUE PINK PINK RED BLUE PINK

*GRAMMAR*
tufa -> PINK 
 wif -> RED 
 dax -> BLUE 
 kiki -> YELLOW 
 u1 fep u2 -> [u1] [u2] 
 u1 blicket x1 -> [x1] [u1] 
 x1 zup x2 -> [x2] [x1] [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 