#include <bits/stdc++.h>
using namespace std;
int main()
{
	int m[26]={0},i;
	char a[100];
	cin>>a;
	for(i=0;a[i]!='.';i++)
	{
		m[a[i]-97]+=1;
	}
	for(int i=0;i<26;i++)
    {
        if(m[i]>0&&m[i]!=0)
        {
            cout<<char(i+97)<<":"<<m[i]<<" ";
        }
    }
	
	
	
	
	
	return 0;
}

/**************************************************************
	Problem: 1164
	User: 21A
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2072 kb
****************************************************************/