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

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

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