I took the index of your words, transformed the selection to binary, added a few zeros, calculated the sha256 digest, took the first Portion of the hexadecimal to convert it to binary, included a few zeros to the 8 digits of the binary and received 00000010011 which interprets to 19 https://pr8bookmarks.com/story18985069/considerations-to-know-about-bip39-seed-phrase-generator