Ask HN: Where can I find a “standard” shareholder agreement for a company?

I'm looking for a "standard" shareholder agreement that would cover most of the topics needed when forming a company. It's going to be a services(consulting) company so if there's anything focused on that, better.

I have a bunch in Portuguese (native language), but I need one in English to get a conversation started around the subject. Ideally it would include voting rights, buyout rules, vesting, veto rights, financial powers, etc.

Any help is appreciated! Thank you.