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

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

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