An eighteen-word mnemonic phrase will increase safety by introducing additional words on the sequence. Here’s an example: Standard recovery phrases use a specific list of 2048 words following the BIP39 standard (Bitcoin Enhancement Proposal 39). You'll be able to validate In case your words are part of the BIP39 list https://sound-social.com/story9046143/new-step-by-step-map-for-bip39-english-words