<form>
    <div class="row field_row">
        <div class="small-6 columns">
        </div>
    </div>
    <div class="row field_row">
        <div class="small-6 columns">
        </div>
        <div class="small-6 columns">
        </div>
    </div>
    <div class="row field_row">
        <div class="small-6 columns">
        </div>
    </div>
    <div class="row field_row">
        <div class="small-6 columns">
        </div>
    </div>
</form>