#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    int i[s.size()-1];
    for(int o=0;o<s.size()-1;o++)i[o]=s[o];
    sort(i,i+s.size()-1);
    int z=0;
    for(int o=0;o<s.size()-1;){
        int k=1;
        for(;;k++)if(i[o+k]!=i[o+k-1])break;
        o+=k;
        printf("%c:%d ",i[o-1],k);
        z++;
        if(z==5){
            z=0;
            cout<<"\n";
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1164
	User: lijinkai
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2080 kb
****************************************************************/