English - text corpora

[Optilon]

For English, I used the following text corpora from uni-leipzig:
https://wortschatz.uni-leipzig.de/en/download/english
eng_news_2016_10K
eng_news-typical_2016_10K
eng_newscrawl-public_2018_10K
eng_wikipedia_2016_10K
eng-au_web_2002_10K
eng-ca_web_2002_10K
eng-com_web-public_2018_10K
eng-eu_web_2015_10K
eng-uk_web_2002_10K
eng-uk_web-public_2018_10K
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total: 100K
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English:
English 100k - 10 files
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Conversion to all small characters:

english_characterfrequency_with_symbols.png (156.65 KiB) Viewed 33718 times

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Early optimization result:

OptENG.png (118.83 KiB) Viewed 33718 times

Optimization result for thumb shift:
(1s-OptENG is with thumbshift and 2s-OptENG ist with normal 2 shift keys)

OptENGthumbshift.png (157.82 KiB) Viewed 33715 times

Optimization result for normal shift:

OptENGnormalshift.png (158.59 KiB) Viewed 33715 times