NCK Pattern: 6 So Far: No German pattern

So far I have (see title) NCK <=> IMEI combinations. I can't post them, since they are sensitive data of the people who were kind enough to extract their a.plist for me. I have learned that the German ones use "SP" instead of "NO". Also the two German NCK's I have both start with the number 3. Coincidence? Keep these a.plists flowing, could people please posts requests on their respective language iPhone forums? Also the algorithm used to verify the NCK on the phone is known and is not even close to reversible. Brute force is capable at 100,000 k/s, so the initial idea of finding a pattern in the NCK's is to lower the time required for that brute force.
Also my theoretical NCK generation system; this has no basis in anything anyone has discovered but... IMEI^d mod n, where d and n are relatively prime and n is similar in size to the IMEI. If Apple keeps d and n secret, they could generate NCK's given an IMEI when no one else could.