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

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

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