I took the index on the words, transformed the quantity to binary, included 3 zeros, calculated the sha256 digest, took the 1st part of the hexadecimal to convert it to binary, added 3 zeros towards the eight digits of the binary and received 00000010011 which interprets to 19 in decimal. https://bookmarkpressure.com/story18780239/examine-this-report-on-bip39-passphrase