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

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

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