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

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

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