I took the index in the words, converted the selection to binary, added 3 zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, additional a few zeros into the 8 digits in the binary and obtained 00000010011 which translates to 19 https://ok-social.com/story4273415/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator