*SUPPORT*
IN: wif lug wif OUT: YELLOW YELLOW YELLOW
IN: zup wif lug wif OUT: BLUE YELLOW YELLOW YELLOW
IN: dax dax lug gazzer OUT: RED RED PURPLE PURPLE
IN: zup tufa OUT: BLUE BLUE BLUE
IN: zup lug gazzer OUT: BLUE PURPLE PURPLE
IN: zup zup OUT: BLUE BLUE
IN: wif lug dax OUT: YELLOW RED RED
IN: wif OUT: YELLOW
IN: dax wif tufa OUT: RED YELLOW RED YELLOW RED YELLOW
IN: dax wif lug dax OUT: RED YELLOW RED RED
IN: dax wif kiki dax lug dax OUT: RED RED RED RED YELLOW
IN: dax lug dax OUT: RED RED RED
IN: wif kiki dax OUT: RED YELLOW
IN: gazzer wif lug dax OUT: PURPLE YELLOW RED RED

*QUERY*
IN: dax dax tufa OUT: RED RED RED RED RED RED
IN: zup lug zup OUT: BLUE BLUE BLUE
IN: zup OUT: BLUE
IN: gazzer wif OUT: PURPLE YELLOW
IN: gazzer lug zup OUT: PURPLE BLUE BLUE
IN: dax lug zup OUT: RED BLUE BLUE
IN: wif kiki wif lug gazzer OUT: YELLOW PURPLE PURPLE YELLOW
IN: dax lug gazzer OUT: RED PURPLE PURPLE
IN: zup lug wif OUT: BLUE YELLOW YELLOW
IN: wif kiki gazzer gazzer lug zup OUT: PURPLE PURPLE BLUE BLUE YELLOW

*GRAMMAR*
dax -> RED 
 zup -> BLUE 
 wif -> YELLOW 
 gazzer -> PURPLE 
 u1 lug u2 -> [u1] [u2] [u2] 
 x1 kiki x2 -> [x2] [x1] 
 x1 tufa -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 