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<!-- HTML form to add and delete data -->
<form method="post">
    <input type="text" name="uno" placeholder="Uno">
    <input type="text" name="dos" placeholder="Dos">
    <input type="submit" name="add" value="Add Data">
</form>

<form method="post">
    <input type="number" name="id" placeholder="ID">
    <input type="submit" name="delete" value="Delete Data">
</form>