= 1;
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        document.getElementById("reply_quest_9").innerHTML = "Almost. Note that the two last loops from the cross are not really nested.";
    }else {
        document.getElementById("reply_quest_9").innerHTML = "You have to chose some answer first.";
    }
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  </head>
  <body>
    <center>
    <h1>
3 Iterations System
    </h1>

    <div id="solver_buttons">
    <center>
        <button type="button" id="button_1" style="width: 180