Google Books Ngram Viewer

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

1800 - 1811 1812 - 1855 1856 - 1861 1862 - 1961 1962 - 2008 congratulate on English
1800 - 1821 1822 1823 - 1867 1868 - 1989 1990 - 2008 congratulate for English

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