I took the index in the words, transformed the number to binary, additional a few zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, additional 3 zeros into the 8 digits on the binary and bought 00000010011 which translates to 19 in https://eternalbookmarks.com/story19445228/the-greatest-guide-to-seed-phrase-bip39