Bip39 Passphrase. You should then do a primary recovery which has a command such as just one under. (This command makes use of a sample wallet file bunlded with BTCRecover) Anyone else who discovers the phrase can steal the bitcoins. It needs to be stored top secret, as an example https://bookmark-template.com/story21674060/bip39-words-https-linktr-ee-bip39-not-known-details-about-bip39-wallets