I'm positive this isn't person mistake, For the reason that recovery phrase was found in two different places: backed up within a file on S3, and printed on the piece of paper. Standard recovery phrases use a particular list of 2048 words pursuing the BIP39 standard (Bitcoin Advancement Proposal 39). https://mylittlebookmark.com/story5266870/5-simple-techniques-for-bip39-word-list-pdf