Google Books Ngram Viewer

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

1920 - 1930 1931 - 1988 1989 - 1995 1996 - 2002 2003 - 2008 pac English
1920 - 1926 1927 - 1940 1941 - 1947 1948 - 1997 1998 - 2008 man English

Run your own experiment! Raw data is available for download here.
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