S1D_1953S1D_1954S1D_1955S1D_1957S1D_1962S1D_1963S1D_1964S1D_1966S1D_1967S1D_1968S1D_1969S1D_1970S1D_1971S1D_1975S1D_1976S1D_1977S1D_1978S1D_1979S1D_1980S1D_1981