#include <iostream>
#include <string>
#include <map>
#include <sstream>
using namespace std;
int main ()
{
    string x; int xs ,n;
    freopen("myDearInput.in", "r", stdin);
    while (cin >> x)
    {
        xs=x.size();
        map <int ,int > m;
        map <int , int>d;
        map <int , int >::iterator it;
        for (int i=0 ; i<xs ; i++)
        {
        n=x[i];
        if ( m.find(n) != m.end() )
        m[n]++;
        else
            m[n]=1;
        }
        for (it=m.begin() ;it !=m.end() ;it++)
        {
            d[(*it).second]=(*it).first;
        }

        for (it=d.begin() ;it !=d.end() ;it++)
        {
            cout<<(*it).second <<" " << (*it).first <<endl;
        }
        cout <<endl ;

    }
    return 0;
}