Google Books Ngram Viewer

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

1900 - 1936 1937 - 1988 1989 - 1992 1993 - 1996 1997 - 2000 hello English
1900 - 1912 1913 - 1972 1973 - 1980 1981 - 1989 1990 - 2000 hallo English
1900 - 1923 1924 - 1948 1949 - 1953 1954 - 1985 1986 - 2000 hullo English

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