*SUPPORT*
IN: dax dax OUT: RED RED
IN: lug fep OUT: PURPLE PURPLE PURPLE PURPLE PURPLE
IN: dax fep OUT: RED RED RED RED RED
IN: dax OUT: RED
IN: tufa wif dax OUT: RED BLUE RED
IN: dax kiki zup OUT: PINK RED
IN: tufa fep OUT: BLUE BLUE BLUE BLUE BLUE
IN: tufa kiki zup OUT: PINK BLUE
IN: tufa kiki dax lug OUT: RED PURPLE BLUE
IN: zup tufa kiki lug OUT: PURPLE PINK BLUE
IN: lug zup OUT: PURPLE PINK
IN: zup zup zup OUT: PINK PINK PINK
IN: tufa OUT: BLUE
IN: lug OUT: PURPLE

*QUERY*
IN: tufa lug OUT: BLUE PURPLE
IN: zup OUT: PINK
IN: zup dax OUT: PINK RED
IN: tufa zup OUT: BLUE PINK
IN: dax lug OUT: RED PURPLE
IN: zup fep wif tufa OUT: BLUE PINK PINK PINK PINK PINK BLUE
IN: lug dax OUT: PURPLE RED
IN: tufa dax kiki zup OUT: PINK BLUE RED
IN: tufa lug wif tufa OUT: BLUE BLUE PURPLE BLUE
IN: zup fep OUT: PINK PINK PINK PINK PINK

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