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

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

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