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

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

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