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

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

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