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

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

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