I took the index with the words, converted the selection to binary, additional 3 zeros, calculated the sha256 digest, took the first part of the hexadecimal to transform it to binary, extra a few zeros into the eight digits with the binary and bought 00000010011 which interprets to 19 in https://social-medialink.com/story4622519/the-2-minute-rule-for-bip39-all-words