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

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

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