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#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
using namespace std;
int main()
{
    map <string,int> m;
    ifstream in;
    in.open ("input.txt");
    while (!in.eof())
    {
        string str;
        in >> str;
        transform(str.begin(), str.end(), str.begin(), ::tolower);
        m[str]++;
    }
    for (auto it:m)
    {
        cout << it.first <<' '<< it.second << endl;
    }
    multimap <int,string> M;
    for (auto it:m)
    {
        M.insert (make_pair (it.second,it.first));
    }
    for (auto it:M)
    {
        cout << it.first <<' '<< it.second << endl;
    }
    ofstream out;
     out.open ("output.txt");
    for (auto it:M)
    {
        out << it.second<<' ' << it.first<< endl;
    }
    return 0;
}