jquery no conflict

<html>
<body>
    <div id='debug'>
    debug<hr/>
    </div>
    <script src="jquery-3.3.1.min.js"></script>
    <script>
        debug("1nd loaded jQuery version ($): " + $.fn.jquery+"<hr>");
        function debug(str){
            $("#debug").append(str).append("<br>");
        }

    </script>
    <script src="jquery.2.1.4.js"></script>
    <script>
        jq21 = jQuery.noConflict( true );
    </script>
    <script src="jquery.1.10.2.js"></script>
    <script>
        jq110 = jQuery.noConflict( true );

        debug("1nd loaded jQuery version ($): " + $.fn.jquery);
        debug("2nd loaded jQuery version ($): " + jq21.fn.jquery);
        debug("3nd loaded jQuery version ($): " + jq110.fn.jquery);
    </script>

</body>
</html>