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

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

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