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

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

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