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