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

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

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