I took the index from the words, transformed the selection to binary, additional a few zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to transform it to binary, additional a few zeros to the eight digits on the binary and got 00000010011 which interprets to 19 https://tinybookmarks.com/story19011368/top-latest-five-bip39-seed-phrase-mnemonics-generator-urban-news