I took the index with the words, transformed the range to binary, added a few zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra 3 zeros on the 8 digits on the binary and acquired 00000010011 which interprets to 19 in https://bookmarkinglog.com/story18802710/new-step-by-step-map-for-ledger-seed-phrase-bip39