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

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

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