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

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

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