I took the index from the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, added 3 zeros on the 8 digits on the binary and acquired 00000010011 which translates to 19 in decimal. https://social-lyft.com/story8662265/invalid-bip39-phrase-things-to-know-before-you-buy