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

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

*GRAMMAR*
fep -> PURPLE 
 lug -> YELLOW 
 wif -> PINK 
 tufa -> BLUE 
 x1 gazzer x2 -> [x1] [x2] 
 x1 kiki u1 -> [x1] [u1] 
 u1 zup u2 -> [u2] [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 