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

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

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