I have created following store structure;
Website: xxx.de
Store: Germany
Store View: German
Website: xxx.nl
Store: Netherlands
Store View: Dutch
Website: xxx.fr
Store: France
Store View: French
I want to use all languages on other websites too like French and German on xxx.nl with Dutch language. I don't want to create same languages under stores it's to much work for translation and i do use "Add Store Code to Urls" option i will keep it too for all websites.