Valid Bip39 Seed Phrase Some words are shorter than 4 letters, like the word “act”. Other words are longer than four letters, including “abstract”. Please remember to permit recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist) When building your own personal seed phrase, https://bookmarkingbay.com/story18519916/bip39-possible-combinations-detailed-notes-on-bip39-phrase