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

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

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