Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1943 1944 - 1951 1952 - 1956 1957 - 1994 1995 - 2000 lead paragraph English
1800 - 1939 1940 - 1985 1986 - 1990 1991 - 1995 1996 - 2000 lead sentence English
1800 - 1810 1811 - 1853 1854 - 1864 1865 - 1966 1967 - 2000 lede English

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