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<iframe name="ngram_chart" src="https://books.google.com/ngrams/interactive_chart?content=who,what,where,why,how&case_insensitive=on&year_start=1700&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t4;,who;,c0;,s0;;who;,c0;;Who;,c0;.t4;,what;,c0;,s0;;what;,c0;;What;,c0;.t4;,where;,c0;,s0;;where;,c0;;Where;,c0;.t4;,why;,c0;,s0;;why;,c0;;Why;,c0;.t4;,how;,c0;,s0;;how;,c0;;How;,c0" width=900 height=500 marginwidth=0 marginheight=0 hspace=0 vspace=0 frameborder=0 scrolling=no></iframe>
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Part-of-speech tags
cook_VERB, _DET_ President _PROPN_
Wildcards
King of *, best *_NOUN
Inflections
shook_INF drive_VERB_INF
Arithmetic compositions
(color /(color + colour))
Corpus selection
I want:eng_2019, I want:eng_2009
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1700
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2008
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English (2012)
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English
2012
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who
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1700 - 1726
1727 - 1752
1753 - 1776
1777 - 1961
1962 - 2008
English
what
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1700 - 1718
1719 - 1738
1739 - 1854
1855 - 1968
1969 - 2008
English
where
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1700 - 1727
1728 - 1754
1755 - 1780
1781 - 1972
1973 - 2008
English
why
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1700 - 1720
1721 - 1744
1745 - 1892
1893 - 1985
1986 - 2008
English
how
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1700 - 1719
1720 - 1742
1743 - 1874
1875 - 1982
1983 - 2008
English