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

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

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