I took the index of your words, transformed the selection to binary, additional a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, added 3 zeros to the 8 digits from the binary and obtained 00000010011 which interprets to 19 in https://dailybookmarkhit.com/story18864961/the-2-minute-rule-for-bip39-all-words