Recover an old Bitcoin PC wallet

Recover a  Bitcoin PC wallet created in 2014, and  the password is 26 characters long, including lowercase, uppercase and digit.


The customer clearly remembers four password segments, but there are three mistakes.


It was these three small mistakes that made him unable to recover password by himself.


It took us three months to enumerate more than 10 billion passwords.


After tasting desperation  for several times , we finally recovered the wallet. ​​​​