I took the index with the words, transformed the range to binary, included a few zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to convert it to binary, added a few zeros to the 8 digits on the binary and bought 00000010011 which interprets to 19 https://social40.com/story4446194/getting-my-bip39-words-to-numbers-to-work