1973 1975 1977 1970
1974 1976 1978 1970
1976 1979 1973 1970
1975 1973 1971 1977
1978 1974 1972 1976
1978 1976 1974 1972
1977 1979 1973 1975
1975 1973 1979 1977
1974 1976 1971 1979
1975 1979 1970 1973