Google Books Ngram Viewer

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

1800 - 1846 1847 - 1943 1944 - 1958 1959 - 1993 1994 - 2008 by foot English
1800 - 1813 1814 - 1842 1843 - 1856 1857 - 1959 1960 - 2008 on foot English

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