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

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

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