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

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

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