I took the index in the words, converted the amount to binary, added 3 zeros, calculated the sha256 digest, took the main A part of the hexadecimal to transform it to binary, added a few zeros into the 8 digits from the binary and bought 00000010011 which translates to 19 https://socialexpresions.com/story4298815/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator