I took the index from the words, transformed the number to binary, included 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to convert it to binary, included a few zeros towards the eight digits of your binary and acquired 00000010011 which interprets to 19 in https://moodjhomedia.com/story2808755/new-step-by-step-map-for-ledger-seed-phrase-bip39