Bip39 wiki https://pastelink.net/caobqzis It is really crucial which the mnemonic sentences are created from randomly picked quantities! These quantities can be created in a number of alternative ways, which can be described in other content articles listed here, like "What exactly is an RNG" and Seed Phrase Generation. Thanks to https://johsocial.com/story10634398/bip39-how-many-combinations-not-known-details-about-bip39-generator-https-t-me-bip39-chat