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

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

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