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

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

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