I took the index on the words, converted the variety to binary, additional 3 zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, included a few zeros towards the 8 digits with the binary and obtained 00000010011 which translates to 19 https://bookmarksfocus.com/story4371852/the-5-second-trick-for-ledger-seed-phrase-bip39