Scrape data with letter pattern

Dear all,

I want to scrape the website, where I want all the pages specific for "postcode" (zipcode).
An example is, but I want all zipcodes, so also the one ending with 6784YU, 2346AK, 9769TG, etc.....

The number pattern can be obtained with pagination and using [0001-9999], but I don't know how to get the whole pattern.

Example Url:

Thanks in advance.