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

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

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