Google Books Ngram Viewer

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

1600 - 1795 1796 - 1855 1856 - 1865 1866 - 1888 1889 - 1900 crocodile tears English

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