#include <iostream>
#include <string>
#include <map>
#include <algorithm>

using namespace std;

void m(const string& a, map<char, int> &a1) {
    for (int i = 0; i < a.size(); ++i) {
        ++a1[a[i]];
    }
}

int main() {
    string a;
    getline(cin, a);
    string b;
    getline(cin, b);
    map<char, int> a1;
    map<char, int> b1;
    m(a, a1);
    m(b, b1);
    cout << "first string" << endl;
    for (auto it = a1.begin(); it != a1.end(); ++it) {
        cout << it->first << " : " << it->second << endl;
    }
    cout << "second string"<< endl;
    for (auto it = b1.begin(); it != b1.end(); ++it) {
        cout << it->first << " : " << it->second << endl;
    }
    return 0;
}