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

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    char c1, c2;
    cin >> c1 >> c2;
    int a1 = c1;
    int a2 = c2;

    if(a1 - 32 == a2) cout << c2 << " " << c1;
    else if(a2 - 32 == a1) cout << c1 << " " << c2;
    else if(a1 < 91 && a2 < 91 || a1 > 96 && a2 > 96)
        if(a2 > a1) cout << c1 << " " << c2;
        else cout << c2 << " " << c1;
    else if(a1 < 91 && a2 > 96)
        if(a1 + 32 > a2) cout << c2 << " " << c1;
        else cout << c1 << " " << c2;
    else if(a1 > 96 && a2 < 91)
        if(a2 + 32 > a1) cout << c1 << " " << c2;
        else cout << c2 << " " << c1;
    return 0;
}