Not sure I understand. Let’s say you have this file:
This is the exact same file as these:
So if you change anything in blabla.html, it will change on all four locations, right?
BUT…. you want Google to consider this 4 separate, completely independent pages/sites? If someone searches for any content in blabla.html, you want all 4 sites to be listed in Google?
Not really sure why you’d want to do that, but if that’s the case, you should just not use any canonical links, and just not let any site make any mention of the other three sites anywhere in the code.