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

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

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