Bip39 Last Word Checksum. Regulations eleven and 12 protect against the choice words that are not different enough. This helps make Every single word much more recognizable between others and fewer mistake susceptible. Such as: the wordlist is made up of "atono", then "atomo" is rejected, but "atomico" is nice. https://bookmarkinginfo.com/story18749422/bip-39-list-the-single-best-strategy-to-use-for-bip39-english-word-list