//Veit ekki afhverju en það þarf að hafa eitt bil eða newline í enda 
//input strengsins annars dettur síðasti stafurinn út.
var input = readline();
input = input.replace(/\s+/g, ''); //taka út bil milli orða
input = input.toLowerCase();
var arr = input.split(''); //setja strenginn í array
arr = arr.sort(); //raða í stafrófsröð
var counter = 1;
for (var index = 0; index < arr.length - 1; index++) 
{
	if(arr[index] == arr[index+1]) //athuga hvort að næsti stafur á eftir sé sá sami.
	{
		counter++;
	}
	else //ef ekki þá prentum við núverandi staf og counter út og endurstilli svo counter.
	{
		print(counter + 'x' + arr[index]);
		counter = 1;
	}
}
print(counter + 'x' + arr[arr.length - 1]); //Síðasta stakið er ekki prentað út í for lykkjunni.

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