If you followed the steps above now you should be ready to make and validate the correctness of BIP-39 seeds oneself (with nominal assistance from tools like binary to hex to decimal converters). Standard recovery phrases use a particular list of 2048 words adhering to the BIP39 standard (Bitcoin Advancement https://bookmarkbells.com/story19526634/ledger-seed-phrase-bip39-no-further-a-mystery