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

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

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