Bip39 http://freeurlredirect.com/bip39550344 Produced seed is determined by the wordlist which was employed for the mnemonic. Since the "mnemonic to seed" system works by using the mnemonic sentence directly rather than the first entropy, translating the mnemonic to a unique wordlist essentially produces a totally various seed. This isn't a difficulty https://7dach.ru/redirect/aHR0cHM6Ly93d3cueW91dHViZS5jb20vd2F0Y2g/dj1aTnNkY016a1BOTQ