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

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

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