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

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

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