<button class="btn btn-default">A</button>
     <button class="btn btn-default">B</button>
     <button class="btn btn-default">C</button>
     <button class="btn btn-default">D</button>
     <button class="btn btn-default">E</button>
     <button class="btn btn-default">F</button>
     <button class="btn btn-default">G</button>
     <button class="btn btn-default">H</button>
     <button class="btn btn-default">I</button>
     <button class="btn btn-default">J</button>
     <button class="btn btn-default">K</button>
     <button class="btn btn-default">L</button>
     <button class="btn btn-default">M</button>
     <button class="btn btn-default">N</button>
     <button class="btn btn-default">O</button>
     <button class="btn btn-default">P</button>
     <button class="btn btn-default">Q</button>
     <button class="btn btn-default">R</button>
     <button class="btn btn-default">S</button>
     <button class="btn btn-default">T</button>
     <button class="btn btn-default">U</button>
     <button class="btn btn-default">V</button>
     <button class="btn btn-default">W</button>
     <button class="btn btn-default">X</button>
     <button class="btn btn-default">Y</button>
     <button class="btn btn-default">Z</button>