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

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

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