🔗 I hope I am not restricting myself here, because it could get challenging.

Updates:

March 3rd - yup - already widened the definition.

March 5th - I think I’ve nailed it. (Though I had to retake a couple of images to get the consistency I was seeking.) Let’s see how it holds up. Then I will explain.

March 11th - it’s a ‘bit of a cheat’ … but arguably still fits into the ‘rules.