<!doctype html><html><head><meta http-equiv='content-type' content='text/html;charset=utf-8'/></head><body style='background-color:white;color:black'><pre>def encode_decode(key: str, text: str) -&gt; str:
    out = []
    <span style='background-color:#fed4d4'>for </span><span style='background-color:#ffffb6'>i</span><span style='background-color:#ffffb0'>, t</span><span style='background-color:#fed4d4'> in </span><span style='background-color:#dafe91'>enumerate</span><span style='background-color:#ffffb0'>