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

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

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