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

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

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