Bip39 Bip44. The sole rationale those letters are listed is to make it much easier for our human brains to study them And maybe memorize our recovery phrase. Amounts revealed in italicized text are for merchandise listed in currency other than U.S. bucks and therefore are approximate conversions to U.S. https://stephendpzmw.wikibyby.com/1108519/the_anatomy_of_a_bip39_phrase_entropy_words_and_stability