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

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

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