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

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

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