For words that only have three letters, there is not any 4th letter. For example with the word “include”, there are no additional letters Later on and thus need to be the word "include". The word “addict” is during the BIP39 wordlist however , you might have utilized “addi” for https://bookmarkprobe.com/story19068500/little-known-facts-about-bip39-seed-phrase-list