Bip39 Online. Although you will find BIP39 wordlists in languages apart from English, it really is strongly not advisable to implement non-English words for wallet backups. It might make restoring the wallet tough or unachievable. BIP39 specifies a list of 2048 words from which the mnemonic phrase is decided on. https://wearethelist.com/story21076839/bip39-passphrase-https-linktr-ee-bip39-5-simple-statements-about-bip39-mnemonic-explained