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

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

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