Bip39 Seed. Even though you will find BIP39 wordlists in languages in addition to English, it is strongly not advised to employ non-English words for wallet backups. It would make restoring the wallet difficult or unattainable. No, there is absolutely no technological limit towards the duration of one's passphrase. Nevertheless, https://bookmarkingfeed.com/story19048570/bip39-list-https-linktr-ee-bip39-a-review-of-bip39-generator