GPT-2 provides a tree of every possible text string, with a probability for each. With a little scripting you can use it for constrainted writing! Here are some mnemonics for the decimal expansion of π.
It's a word, a short statement or phrase which you learn. Mnemonic sentences usually represent one or two concepts that relate to things that are not familiar yet, to provide structure.
Man, I wish I could recommend an answer. You're not gonna remember something, because, obviously, pi's so big. Actually, let's forget pi. There's only one way: Googling for it.
It's a fact. A drink, everytime we finish, makes our brain stronger, healthier, happier. Everytime you go out drinking, your memory is better. When the day finishes, it's so amazing.
Now I have a story, something of beauty, that's all about sexiness, lustiness, sensual pleasures. But, on the opposite, what really is sexier than sex, sex, sexiness, and so, perhaps something which zero of humanity actually have... a beautiful feeling, a wonder, something...
All I know, I heard. Something is eating these men alive, someone's bloodlust driving something mad in the darkness. What should be buried down the old cemetery now is instead scattered about, zero to hundreds, thousand even. A hellhound tearing a living, screaming and squirming creature's leg...
Now, I have a great advantage. My brain's power and speed, combined, surPASSES ANYONE'S, INCLUDING GOD. I'M THE UNIVERSE, GOD'S SHADOW. MY BRAIN'S SIZE AND ITS STRENGTH ARE SO IMMENSE, EVERYONE'S MINDS...