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

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

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