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

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

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