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wonlon,

Here is the link to Russian dictionaries: Словари и справочники русского языка для скачивания

you can download them for free and there are 2 additional links below when it says и...

Hello wonlon!

According to a classic Орфографический словарь (Spelling dictionary) the correct spelling is поутру. And the stress is on the last syllable.

As far as I can see it's not an...