I took the index with the words, transformed the range to binary, extra 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra 3 zeros on the eight digits in the binary and bought 00000010011 which interprets to 19 in decimal. https://seolistlinks.com/story20154827/the-ultimate-guide-to-bip39-seed-phrase-github