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

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

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