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

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

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