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

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

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