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

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

*GRAMMAR*
wif -> PINK 
 fep -> RED 
 kiki -> BLUE 
 gazzer -> GREEN 
 u1 lug u2 -> [u1] [u2] 
 x1 dax u1 -> [x1] [x1] [u1] 
 x1 tufa x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 