Google Books Ngram Viewer

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

1750 - 1833 1834 - 1959 1960 - 1974 1975 - 1989 1990 - 2008 possible English
1750 - 1820 1821 - 1915 1916 - 1933 1934 - 1978 1979 - 2008 impossible English

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