I took the index of your words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to convert it to binary, added 3 zeros to your eight digits of your binary and bought 00000010011 which translates to 19 in https://sociallweb.com/story4251518/the-definitive-guide-to-bip39-seed-phrase