Google Books Ngram Viewer

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

1800 - 1887 1888 - 1977 1978 - 1982 1983 - 1988 1989 - 2000 costudent English
1800 - 1822 1823 - 1959 1960 - 1973 1974 - 1987 1988 - 2000 fellow student English

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