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In page Norwegian language:

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Some letters may be modified by diacritics: é, è, ê, ó, ò, and ô.[2][3] In Nynorsk, ì and ù and are occasionally seen as well.[citation needed] The diacritics are not compulsory, but may in a few cases distinguish between different meanings of the word, e.g.: for ('for/to'), fór ('went'), fòr ('furrow') and fôr ('fodder').[3] Loanwords may be spelled with other diacritics, most notably ï, ü[3], á and à.[citation needed]