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

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

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