<c:forEach var="r" items="${right}" varStatus="i">
<div>
<input type="checkbox" name="checkbox" value = "${r.right_id}" id = "${r.right_id }"/>
${r.right_name}
<br><br>
<c:forEach var="rr" items="${r.list}" varStatus="i">
<input type="checkbox" name="checkbox" value = "${rr.right_id}" id="${rr.right_id}"/>
${rr.right_name}
<c:if test="${i.count%6==0&&!i.last}">
<br>
</c:if>
</c:forEach>
</div>
<br>
</c:forEach>