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

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

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