Help Password Msword;confidential

Please, I really need help from you guys.
I have a document typed 2 years ago and saved on Microsoft word.Before now it was confidential but now its confidentiality has elapsed. I passworded it , both (to open and modify).Now i really need the content and i have tried all possible password. Caps and small case. Infact i normally use a uniform password for all my documents,to avoid a mix up. i wonder y i cannot access this document.please any way out ?
Thanks

Ralvy , please if you know u can be of any assistance , explain how to . Or do u really need to examine it ?
This doc. is very important to me. But you may see the content if need be .I just need it in legible writing .Either on WORDPAD,NOTEPAD or MSWORD