Where can I find a blank affidavit of a US marriage certificate notarized by the US consulate in Chiang Mai for my Non-O-over-50 visa application?

Hi! We'll be going back to the US in a bit, and while there applying for our Non-O-over-50 visa for our return, with plans do to the retirement extension. For all that, we need to get an affidavit of our US marriage certificate notarized by the US consulate here in Chiang Mai. Gonna do that here before we leave for the US to just git 'er done. By chance, anyone have a blank online copy of the affidavit they use for that? I believe they have copies at the consulate, but was curious to have a look at it prior to our appointment at the consulate. Couldn't find one on the consulate site, just one to swear that you're not married.