*SUPPORT*
IN: zup fep zup OUT: BLUE BLUE
IN: zup OUT: BLUE
IN: zup zup OUT: BLUE BLUE
IN: dax tufa dax OUT: PINK PINK PINK PINK
IN: lug tufa zup OUT: BLUE PURPLE BLUE PURPLE
IN: lug zup tufa zup OUT: PURPLE BLUE BLUE BLUE BLUE
IN: kiki OUT: YELLOW
IN: lug lug lug OUT: PURPLE PURPLE PURPLE
IN: zup zup lug lug zup gazzer OUT: BLUE BLUE PURPLE PURPLE BLUE BLUE
IN: dax fep dax OUT: PINK PINK
IN: lug gazzer OUT: PURPLE PURPLE
IN: lug OUT: PURPLE
IN: zup gazzer OUT: BLUE BLUE
IN: zup kiki fep dax OUT: BLUE YELLOW PINK

*QUERY*
IN: kiki zup gazzer OUT: YELLOW BLUE BLUE
IN: kiki gazzer OUT: YELLOW YELLOW
IN: zup tufa lug OUT: PURPLE BLUE PURPLE BLUE
IN: kiki fep zup OUT: YELLOW BLUE
IN: kiki tufa zup OUT: BLUE YELLOW BLUE YELLOW
IN: zup tufa dax OUT: PINK BLUE PINK BLUE
IN: lug lug lug zup dax tufa lug OUT: PURPLE PURPLE PURPLE BLUE PURPLE PINK PURPLE PINK
IN: dax gazzer OUT: PINK PINK
IN: lug dax fep kiki OUT: PURPLE PINK YELLOW
IN: dax fep zup OUT: PINK BLUE

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