The repititions have me curious.

Do you, or anyone, happen to know of a cypher-text analysis tool that will allow for example to quickly workout distributions of substrings, perform simply replacements and the like?

I guess I could code such a thing but my coding is pretty rusty.

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Edit: I found these but question is still open if someone has a good tool to suggest.

http://crypto.lkdev.com/fa.php http://www.richkni.co.uk/php/crypta/freq.php