I took the index of the words, transformed the range to binary, extra a few zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to convert it to binary, added a few zeros on the eight digits from the binary and received 00000010011 which interprets to 19 https://bookmarkassist.com/story18741788/bip39-phrase-generator-can-be-fun-for-anyone