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

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

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