I took the index from the words, transformed the selection to binary, added three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to convert it to binary, additional 3 zeros for the 8 digits on the binary and got 00000010011 which interprets to 19 in decimal. https://guidemysocial.com/story4206750/new-step-by-step-map-for-ledger-seed-phrase-bip39