I took the index of the words, converted the amount to binary, extra a few zeros, calculated the sha256 digest, took the main part of the hexadecimal to transform it to binary, included 3 zeros into the eight digits of your binary and bought 00000010011 which translates to 19 in https://bookmark-group.com/story4378907/a-secret-weapon-for-bip39-words-to-numbers