ministryofjustice/cla_backend — pull request #262 by r4vi (2014-12-22 15:42:16+00:00)
Title: Make the unique refrerence less ambbigious

still kept the two 4-digit parts more or less the same as operators can
intuitavly know those bits are going to be numbers only, taking out ambbigious
numbers from them would only leave a pool of 3479 as valid possibilities for
each position which reduces the keyspace too much for my liking.