filter selected checkbox item show in angular material chips

i want to show the filter selected checkbox item in the angular material chips

<h2 class="md-title">Use the default chip template.</h2>

<md-chips ng-model="items" readonly="readonly"></md-chips>


<div layout="column">
    <div flex><h2>Filter</h2></div>

    <div class="demo-select-all-checkboxes" flex="100" ng-repeat="item in items">
        <md-checkbox ng-checked="exists(item, selected)" ng-click="toggle(item, selected)">
            
        </md-checkbox>
    </div>
</div>