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

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

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