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

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

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