         <div class="row">
                <div ng-repeat="premise in tactic.derivation.premise">
                    <div ng-class="{'col-sm-12': tactic.derivation.premise.length==1, 'col-sm-6': tactic.derivation.premise.length==2, 'col-sm-4': tactic.derivation.premise.length==3, 'col-sm-3': tactic.derivation.premise.length==4, 'col-sm-2': tactic.derivation.premise.length==5, 'col-sm-2': tactic.derivation.premise.length==6, 'col-sm-1': tactic.derivation.premise.length>=7}">
                        <div ng-