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

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

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