- ** brain-even ** https://asciinema.org/a/rm05FdsJzg2XKAZ8EFajbMZgT
- ** brain-calc ** https://asciinema.org/a/qK2I4K5TgIZnSv4PNzWpK6PGO
- ** brain-gcd ** https://asciinema.org/a/fQlAJw2n33oBfFYicjAFfsrYH
- ** brain-progression ** https://asciinema.org/a/iXohGg24BtlEsbQOWMwEX9EN1
- ** brain-prime ** https://asciinema.org/a/D3dZ3Z36wtTMvDoWPMYaoh2LG