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

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

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