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

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

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