I took the index with the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the first A part of the hexadecimal to convert it to binary, additional three zeros towards the 8 digits of the binary and bought 00000010011 which interprets to 19 in https://bookmarkcolumn.com/story18619144/considerations-to-know-about-bip39-seed-phrase-generator