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APL, Japan The Paciello Group Monotype Alibaba

Two-letter or three-letter language codes

Updated article

Since the publication of the new IANA Language Subtag Registry as the place to find language subtags, rather than the ISO code lists, this question is no longer relevant.

The article was almost completely rewritten to explain this.

The Portuguese translation has been removed, since the text is now so radically different.

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