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

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

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