Bip39 vs bip32 https://hectorswwo172.bearsfanteamshop.com/picking-the-right-tools-for-your-bip39-generation-demands 3a43fced052690635cc9fdce418514528b000dff3eaa5b986ea7be809062e775f2fe99c76733ff200b56fb70cac7c6ac7818b1e8139192a70fe274f5bf57fa46 For words that only have three letters, there is not any 4th letter. Such as Using the word “add”, there isn't any much more letters afterward... https://bookmarkswing.com/story21716704/bip39-vs-slip39-reddit-bip39-compatible-wallet-an-overview-https-dzen-ru-bip39-phrase-com