in reference to the word "postulate"...

[franksalterego]

...does this sentence work?

"Here are a list of enigmas that I am trying to postulate".

[Josef Essberger]

That would depend entirely on the enigmas and how they were expressed on the list. Please share them.

You can postulate “the existence of flying saucers” but not “the existence of the Nazca lines”. (Just examples. You may have much more profound enigmas than these.)