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

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

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