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

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

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