Google Books Ngram Viewer

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

1800 - 1814 1815 - 1829 1830 - 1878 1879 - 1964 1965 - 2000 swell English

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