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

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

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