On 2014-01-26, at 15:37, David de Jongh wrote:
> You are trying to pack a field that has 36^8 (2,821,109,907,456) possible
> combinations into a field that has 60^4 (12,960,000) combinations. You will
> need a hashing algorithm.
>
http://en.wikipedia.org/wiki/Pigeonhole_principle-- gil
