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

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

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