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

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

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