original: historically mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- .
simplifications: historically , mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- , or water -lrb- watermill -rrb- . in the past , mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- . -lrb- in the past -rrb- mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- . in history , mills were run by hand , animal , wind or water . with reference to past events , mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- . historically mill made power by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- . historically mills were powered by hand -lrb- mortar and pestle -rrb- , working animal , wind -lrb- windmill -rrb- or water -lrb- watermill -rrb- . historically mills were powered by hand , working animal , wind or water .