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

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

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