title: How to hide number button on UIKeyboard?
body: <p>Is there a way to hide <strong>number button</strong> and <strong>space button</strong>?</p>
  
  <p><img src="https://i.stack.imgur.com/2nndM.png" alt="enter image description here"></p>
  
  <p><em>Mantaining UIKeyboard <strong>transparency</em></strong>??</p>
  
  <p>I need a keyboard with only letters, backspace and NEXT button, nothing else.<br>
  I need compatibility from iOS 3.1+!</p>
  
  <p>thanks.</p>