Bip39 Checksum. You would then do a standard Restoration with a command similar to the one particular down below. (This command works by using a sample wallet file bunlded with BTCRecover) What constitutes a "very good wallet" is one that has distinct, very easy to accessibility documentation on supported BIP https://1001bookmarks.com/story18903440/ian-coleman-bip39-https-linktr-ee-bip39-5-essential-elements-for-bip-39