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

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

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