I took the index from the words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, additional a few zeros towards the 8 digits in the binary and bought 00000010011 which translates to 19 https://socialistener.com/story4506913/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting