Well I am giving you a clue. I have worked over 15 days.

1. Download all Bitcoin address with funds database around 2GB

2. Create python program that will create password containing uppercase and lowercase: Total 26+26 = 52 and only 6 special char @#$&!*

So total 58

Now length 4 = 52*52*52*52

Create private key and corresponding addresses. Compare it with your database. You will find one address. Now find private key with it. You will find one. I have already shifted the fund.

2. For second one, similar method but different length