Amazing. A friend of mine gave me the book "A Void" [1] by Georges Perec a few years ago that follows the same constraint. A little research and it turns out to

Amazing. A friend of mine gave me the book "A Void" [1] by Georges Perec a few years ago that follows the same constraint. A little research and it turns out to be because he was a member of that community [2]. [1] https://en.wikipedia.org/wiki/A_Void https://en.wikipedia.org/wiki/A_Void [2] https://en.wikipedia.org/wiki/Oulipo https://en.wikipedia.org/wiki/Oulipo