Article 20. Those deficits (including such deficits of an agricultural, forestry of fishermen's association dissolved as a result of amalgamation, as are succeeded by the agricultural, forestry or fishermen's association which comes into existence or which continues to exist in consequence of such amalgamation as its deficits) of an agricultural, forestry or fishermen's association making reconstruction and rehabilitation in accordance with the provision of Article 3 paragraph 1 (in case the agricultural, forestry or fishermen's association has dissolved as a result of amalgamation on or before the end of the business year including December 31, 1951, the agricultural, forestry or fishermen's association which comes into existence or which continues to exist in consequence of such amalgamation and which makes reconstruction and rehabilitation in accordance with the provision of Article 18 paragraph 1;the same in the next Article and Article 22), which occurred in each business year during the period from the first day of the first business year beginning on or after January 1, 1950 to the end of the business year including December 31, 1951 (hereinafter referred to as "base business year" ) shall be included in the deficits in the calculation of the incomes which are specified in Article 9 paragraph 1 of the Corporation Tax Law (Law No.28 of 1947) in the base business year and in each of the business years beginning after the end of the base business year and ending within five years after the end of the business year during which such deficits occurred;provided that this shall be limited to the case where the blue return (meaning the return specified in Article 25 paragraph 1 of the Corporation Tax Law;hereinafter the same) is submitted in the base business year and continually submitted thereafter.