<div class="custom-control custom-radio">
<input type="radio" class="custom-control-input" name="example1" id="option1">
<label for="option1" class="custom-control-label">option1</label>
</div>
<div class="custom-control custom-radio">
<input type="radio" class="custom-control-input" name="example1" id="option2">
<label for="option2" class="custom-control-label">option2</label>
</div>
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