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

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

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