encrypted wallet.dat forgotten passphrase...

[prophetx]

i have an LTC wallet which I locked with a passphrase a couple months ago, and of course forgot.  I've tried all of my usual passwords, but I think I did something clever this time and thought I would remember...

it is highly likely less than 30 chars long alphanumeric with only a few symbols.  unless i used an entire william blake poem and then I am screwed...but I don't think I would have done that, I just recall thinking about it.

any recommendations?  

[Buratino]

You can read this topic (in russian - use translate.google.com) about the same problem, successfully solved by password brutforcing custom software, using dictionary and typical mutations of words (keyboard lang layout, CAPS LOCK, symbols order and etc).