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

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

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