In reply to:

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The complete list is "a", "un ", "une ", "the ", "le ", "la " "l'", "les ", "der ", "die ", "das ", "ein ", "eine ", "einen "

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Not "an"? Two birds with one stone, as it catches "an" which is "the" in Gaelic (I have a lot of Capercaillie, Altan, Clannad, etc), though "am" (also "the" wouldn't work so well...