10008

#include<bits/stdc++.h>
using namespace std;

struct compare
{
    char str;
    int var;

};

compare arr[26+5];

int main()
{
    int n,j,i,k,a[26+5],l,mini=0,temp,cn,key,cn2,key2;
    string s;
    cin>>n;
    getchar();
    for(i=0; i<27; i++)
    {
        arr[i].var = 0;
        arr[i].str =  i + 'a';

    }

    for(i=0; i<n; i++)
    {
        getline(cin,s);
        k=s.length();

        for(j=0; j<k; j++)
        {
            if(s[j]>='A' && s[j]<= 'Z')
                s[j]= s[j]+32;
            if(s[j]>='a' && s[j]<='z')
            {
                arr[s[j] - 'a'+1].var++;
                cout<<s[j]<<arr[s[j] -'a'+1].var<<endl;
            }


        }


    }
    for(j=2; j<=26; j++)
    {
        key = arr[j].var;
        key2 = arr[j].str;

        i = j-1;
        while(i > 0 && arr[i].var < key  )
        {
            arr[i+1].var = arr[i].var;
            arr[i+1].str = arr[i].str;
            i = i-1;
        }

        arr[i+1].var = key;
        arr[i+1].str = key2;



    }
    for(i=0; i<26; i++)
    {
        if(arr[i].var != 0 )
            cout<<arr[i].str<<" "<<arr[i].var<<endl;

    }
    return 0;
}