Bip39 format example https://www.4shared.com/s/fAf7kF4dLku Let us suppose it will be 10x a lot quicker compared to the GFX card higher than so roughly 2,4M hashes/s. A normal attacker will have some such specialised devices. Some wallets can import different seed phrases plus some have only a single standard. Remember that https://hindibookmark.com/story21761866/generate-bip39-passphrase-the-smart-trick-of-bip39-word-list-github-that-no-one-is-discussing-https-x-com-tundra838554