I took the index of your words, converted the range to binary, additional a few zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to convert it to binary, added 3 zeros towards the eight digits of your binary and received 00000010011 which interprets to 19 in https://bookmarkswing.com/story20445718/top-guidelines-of-bip39-word-list-pdf