Google Books Ngram Viewer

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

1800 - 1813 1814 - 1823 1824 - 1910 1911 - 1991 1992 - 2008 berk English

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