For words that have only 3 letters, there is no 4th letter. Such as with the word “insert”, there are no additional letters afterwards and so must be the word "incorporate". The word “addict” is within the BIP39 wordlist however, you would've utilised “addi” for “addict”. Artwork is actually a https://thesocialcircles.com/story4515894/examine-this-report-on-bip39-mnemonic-phrase-tool