I took the index with the words, transformed the quantity to binary, additional three zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, included a few zeros into the eight digits with the binary and bought 00000010011 which interprets to 19 in https://mirrorbookmarks.com/story18738455/an-unbiased-view-of-bip39-seed-phrase-github