I took the index in the words, converted the number to binary, additional three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to transform it to binary, added a few zeros towards the eight digits of the binary and bought 00000010011 which translates to 19 in https://bookmarkblast.com/story19070213/examine-this-report-on-bip39-mnemonic-phrase-tool