For words that only have three letters, there is no 4th letter. For example with the word “insert”, there won't be any far more letters Later on and therefore must be the word "incorporate". The word “addict” is in the BIP39 wordlist however , you would have utilised “addi” for https://open.substack.com/pub/jaidenqrel955/p/unlocking-the-power-of-bip39-how?r=54uq0h&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true