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>... I still have problems with spelling in English, because I learned it too late, and didn't practice enough....

You're joking. Your spelling is very good, better than most native Englaish speakers on this forum. For instance, a common mistake you don't make is having two "o"s in "To lose" (as in "misplace"). I see this sooooo often here, people write "I don't want to loose all my editing" (let it all go?).