Google Books Ngram Viewer

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

1800 - 1951 1952 - 1979 1980 1981 - 1987 1988 - 1992 implosive consonant English
1800 - 1954 1955 - 1957 1958 1959 - 2000 2001 - 2000 ejective consonant English

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