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<p>[QUOTE=&quot;non_cents, post: 1625008, member: 30970&quot;]It is uncommon, but not terribly so. For instance, you&#039;ve got the 2004P 1DO/1DR-001. There are a few other doubled columns/DDO combos. And there are a few examples in the 1940s of class VI DDO/DDR combos as well, so I wouldn&#039;t quite call the possibility remote.[/QUOTE]</p><p><br /></p>

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