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

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

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