Google Books Ngram Viewer

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

1800 - 1850 1851 - 1958 1959 - 1970 1971 - 1986 1987 - 2000 had left the previous day English
1800 - 1846 1847 - 1868 1869 - 1880 1881 - 1982 1983 - 2000 left the previous day English

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