I took the index of the words, transformed the number to binary, added three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to convert it to binary, added a few zeros to the 8 digits of the binary and bought 00000010011 which interprets to 19 https://socialbuzzfeed.com/story4277287/little-known-facts-about-bip39-seed-phrase-list