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

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

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