Google Books Ngram Viewer

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

1900 - 1942 1943 - 1992 1993 - 1994 1995 - 1997 1998 - 2000 tsk tsk English
1900 - 1906 1907 - 1933 1934 - 1939 1940 - 1992 1993 - 2000 tut tut English

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