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

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

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