Google Books Ngram Viewer

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

1800 - 1831 1832 - 1924 1925 - 1933 1934 - 1953 1954 - 1987 sistern English
1800 - 1839 1840 - 1875 1876 - 1879 1880 - 1963 1964 - 1987 sistren English

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