For words that have only 3 letters, there is not any 4th letter. By way of example with the word “incorporate”, there isn't any far more letters afterwards and therefore should be the word "increase". The word “addict” is within the BIP39 wordlist however, you would have utilised “addi” for https://toplistar.com/story20758537/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator