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

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

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