Gen_Seed. The sole purpose those letters are listed is to make it less complicated for our human brains to read them And maybe memorize our recovery phrase. These words are pulled from a certain list of 2048 words. They can be found listed here or listed underneath. BIP39 Passphrase Generator https://financespubliques93692.sunderwiki.com/1105262/the_anatomy_of_a_bip39_phrase_entropy_phrases_and_security