I took the index in the words, transformed the range to binary, included 3 zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to transform it to binary, added a few zeros into the eight digits of your binary and bought 00000010011 which translates to 19 in https://thebookmarklist.com/story18899095/new-step-by-step-map-for-ledger-seed-phrase-bip39