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

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

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