Google Books Ngram Viewer

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

1827 - 1832 1833 - 1856 1857 - 1860 1861 - 1864 1865 - 1867 doubt that English
1827 - 1832 1833 - 1858 1859 - 1861 1862 - 1864 1865 - 1867 doubt if English
1827 - 1830 1831 - 1854 1855 - 1858 1859 - 1862 1863 - 1867 doubt whether English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer