I am positive this is not person error, since the recovery phrase was found in two distinctive places: backed up inside of a file on S3, and printed with a bit of paper. Standard recovery phrases use a selected list of 2048 words pursuing the BIP39 standard (Bitcoin Enhancement Proposal https://agency-social.com/story4075161/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting