I took the index of your words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the first Section of the hexadecimal to transform it to binary, added three zeros into the 8 digits in the binary and acquired 00000010011 which translates to 19 in https://socialwoot.com/story21371504/examine-this-report-on-bip39-mnemonic-phrase-tool