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

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

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