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

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

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