What is the usual opening line of a fairytale?

There are several go-to openings for fairytales, all of which serve the dual purpose of letting the audience know this is a fairy tale and getting the storyteller over the butterflies of starting. Here are some that I use often. (1) Once upon a time ... (2) Long, long ago ... (3) Long ago and far away ... (4) Once there was and was not ... (5) In a certain time, in a certain place, there lived ... (6) Here's a tale I learned from ... (7) That reminds me of the time ...