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

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

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