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

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

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