I took the index from the words, transformed the selection to binary, extra a few zeros, calculated the sha256 digest, took the 1st Portion of the hexadecimal to convert it to binary, added 3 zeros to the 8 digits of the binary and bought 00000010011 which translates to 19 in https://bookmarkindexing.com/story18702664/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting