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

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

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