Google Books Ngram Viewer

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

1500 - 1658 1659 - 1688 1689 - 1693 1694 - 1767 1768 - 2008 fart English

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