Here all proposed values have stray endings that should be cleaned.
List is human-reviewed, as in some cases just removing ending is not appropriate. I reviewed sample of values, and these are not useful as detector of places where human review is useful.
All values here appear to me as fixing blatant typos, and therefore not requiring bot approval (see Define, check and (automated) correct string-values for the tag "colour" (for buildings, ...) - #12 by SomeoneElse ) - but I still want to give chance to review it. Feel free to ignore it, but feedback is also welcome. If you think that full scale bot approval is needed please let me know.
Cases like covered=none → covered=no were not included here. kerb=flushed is probably closest to real tagging scheme here.
List is available at Mechanical Edits/Mateusz Konieczny - bot account/fix many obvious typos - suffix cleaning - OpenStreetMap Wiki
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My personal ‘best’ is miss-hitting the enter key and on the way down pushing the + key immediately left of the enter key also on my italian keyboard. The result is for instance having leaf_type=broadleaved by first touching B which autofills broadleaved in JOSM and ID, but then when going to enter hitting the + key first resulting in a leaf_type=b+. On occasion I’ve been contacted what g+, b+ c+ etc means on the many nodes since after the first tree it’s copy+C and on and on copy+V whereever the mouse gets pointed and away the replication of the typo goes on a meadow orchard. No notification that the value is not right. The incorrect values can loiter for months on the map by the many.
On occasion I notice myself when reloading a data set of the same area as when typing a leaf_type=B, it wont autofill broadleaved anymore as JOSM remembers previous values used. Then the search function is great to seek them out and correct.
Where is service=driveway2? 
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Ah, that famous discussion…somewhere in SE Asia, likely Japan. replace with services=driveway+driveway=pipestem
As usual, thanks for working on these. Fully support 
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If I would spot it there (or something where I know about a similar story) I would remove it and not include into such edit with “therefore not requiring bot approval”
BTW, part of the reason for Mechanical Edits/Mateusz Konieczny - bot account/fix many obvious typos - suffix cleaning - OpenStreetMap Wiki is that I can check whether any values getting removed have wiki pages which would signal need to check what is going on
(yes, I know that this mention was a joke)
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