SOURCE

<section class="row'">
  <div  style="  background-color:yellow;" class="col-md-3 col-sm-3<section class="row'">
  <div  style="  background-color:yellow;" class="col-md-3 col-sm-3 col-xs-offset-3">
    左边
  </div>
   <br> <div style="  background-color:orange;"class="col-md-6 col-sm-9">
   中间
  </div><br>
   <div style="  background-color:red;"class="col-md-3 col-sm-12">
    右边
  </div><br>
   <div style="background-color:blue;" class="col-md-12">
     1
   </div><br>
  <div style="background-color:green">2</div><br>
  <div style="  background-color:black;"class="col-xs-9">
   中间
  </div><br>
  <div style="  background-color:green;"class="col-lg-9">
   中间
  </div><br>
</section> >
    左边
  </div>
   <br> <div style="  background-color:orange;"class="col-md-6 col-sm-9">
   中间
  </div><br>
   <div style="  background-color:red;"class="col-md-3 col-sm-12">
    右边
  </div><br>
   <div style="background-color:blue;" class="col-md-12">
     1
   </div><br>
  <div style="background-color:green">2</div><br>
  <div style="  background-color:black;"class="col-xs-9">
   中间
  </div><br>
  <div style="  background-color:green;"class="col-lg-9">
   中间
  </div><br>
</section>