I took the index of your words, transformed the number to binary, additional a few zeros, calculated the sha256 digest, took the very first Section of the hexadecimal to convert it to binary, extra three zeros to the 8 digits from the binary and acquired 00000010011 which interprets to 19 https://social40.com/story4289449/ledger-seed-phrase-bip39-no-further-a-mystery