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

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

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