I took the index in the words, transformed the amount to binary, included a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, added a few zeros towards the 8 digits on the binary and bought 00000010011 which interprets to 19 https://bookmarkproduct.com/story19120790/little-known-facts-about-bip39-seed-phrase-list