Google Books Ngram Viewer

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

1600 - 1685 1686 - 1829 1830 - 1848 1849 - 1955 1956 - 2000 easter week English
1600 - 1752 1753 - 1850 1851 - 1856 1857 - 1937 1938 - 2000 passion week English

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