I'm positive it's not person error, For the reason that recovery phrase was found in two various locations: backed up within a file on S3, and printed with a piece of paper. Standard recovery phrases use a particular list of 2048 words following the BIP39 standard (Bitcoin Improvement Proposal 39). https://socialbuzzmaster.com/story4373434/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator