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

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

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