For the time being, in working out the amount of the first average unit tax of major cities, cities, or towns and villages mentioned in Article 19, paragraph 2, the amount of the first standard unit tax of cities, towns and villages mentioned in paragraph 3 of the same Article, the amount of the first unit tax mentioned in Article 25, paragraph 3, and the amount of the first standard unit tax of major cities, or the amount of the first standard unit tax of towns and villages mentioned in paragraph 3 of the same Article, local rates on national taxes under the unrevised Local Taxation Law may, as prescribed by order, be added to the three income taxes, and in working out the amount of the second average unit tax of major cities, cities or towns and villages mentioned in Article 19, paragraph 3, the amount of the second standard unit tax of towns and villages mentioned in paragraph 5 of the same Article, the amount of the second unit tax mentioned in Article 26, paragraph 2, the amount of the second standard unit tax of major cities, and the amount of the second standard unit tax of cities, or the amount of the second standard unit tax of towns and villages mentioned in paragraph 3 of the same Article, local rates on national taxes under the unrevised Local Taxation Law may, as prescribed by order, be deducted from the total amount of ordinary taxes.