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

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

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