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

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

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