copyright Seed Phrase Generator Some words are shorter than 4 letters, like the word “act”. Other words are for a longer period than 4 letters, which include “summary”. You should make sure to allow for recovery from mnemonic phrases which have invalid checksums (or that you don't have the wordlist) https://bookmarkingquest.com/story18476691/bip39-wallet-app-the-best-side-of-seed-phrase-generator