Arrange ingredients on a large plate and place the plate on the table. Mix soy sauce, sake, sugar, and water to make sukiyaki sauce. Set an electric pan or a skillet on the table. *After this point, cooking is done at the table as you eat. Heat a little oil in the pan. Fry some beef slices, then pour sukiyaki sauce in the pan. Add other ingredients when the sauce starts to boil. Simmer until all ingredients are softened. It's ready to eat. Dip the cooked sukiyaki into the raw, beaten eggs if you would like. As the liquid is reduced, add more sukiyaki sauce or hot water.