Google Books Ngram Viewer

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

1500 - 1635 1636 - 1653 1654 - 1668 1669 - 1905 1906 - 2008 promiscuous English

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