var vowel=document.getElementById('ch');
 
    vowel.onclick=function(){

         
      var disp=document.getElementById('count'); 
      disp.value=vowel.value;
     }

         var vowele=document.getElementById('sh');
 
    vowele.onclick=function(){

       
      var disp=document.getElementById('count'); 
      disp.value=vowele.value;
     }
     
             var voweli=document.getElementById('th');
 
    voweli.onclick=function(){

        
      var disp=document.getElementById('count'); 
      disp.value=voweli.value;
     }
     
           var vowelo=document.getElementById('wh');
 
    vowelo.onclick=function(){

        
      var disp=document.getElementById('count'); 
      disp.value=vowelo.value;
     }