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

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

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