I took the index of the words, transformed the range to binary, added a few zeros, calculated the sha256 digest, took the 1st part of the hexadecimal to transform it to binary, included 3 zeros for the eight digits with the binary and bought 00000010011 which translates to 19 in https://highkeysocial.com/story4306001/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator