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

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

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