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

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

*GRAMMAR*
tufa -> RED 
 lug -> GREEN 
 dax -> YELLOW 
 fep -> BLUE 
 x1 wif x2 -> [x1] [x1] [x2] [x1] [x1] 
 u1 kiki u2 -> [u1] [u2] 
 u1 blicket -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 