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

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

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