When backing up your mnemonic phrase, we strongly propose using physical media, which include writing to the mnemonic phrase card or maybe a metallic board like the SafePal Cypher. You can also maintain multiple back-ups of it. Standard recovery phrases use a selected list of 2048 words following the BIP39 https://ragingbookmarks.com/story18857200/little-known-facts-about-bip39-seed-phrase-list