I took the index on the words, converted the selection to binary, extra three zeros, calculated the sha256 digest, took the 1st part of the hexadecimal to transform it to binary, added a few zeros to the eight digits from the binary and acquired 00000010011 which interprets to 19 in https://mylittlebookmark.com/story4420284/5-simple-techniques-for-bip39-word-list-pdf