Untitled

<head>
    <meta name="viewport" content="width=device-width" />
    <title>Overhead</title>

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
</head>
<body>
    <div class="container">
        <div class="col-6">
            <div class="row">
                Top Left
            </div>
            <div class="row">
                Middle Left
            </div>
            <div class="row">
                Bottom Left
            </div>
        </div>
        <div class="col-6">
            Right
        </div>
    </div>
</body>