#include <iostream>
#include <string>
using namespace std;
 
int main() {
    int N;
    cin >> N;
 
    string word;
    for (int i = 0; i < N; i++) {
        cin >> word;
 
        if (word.length() > 0) {
            if (word[0] >= 'a' && word[0] <= 'z') 
                word[0] = word[0] - ('a' - 'A');
 
            if (word[word.length() - 1] >= 'A' && word[word.length() - 1] <= 'Z') 
                word[word.length() - 1] = word[word.length() - 1] + ('a' - 'A');
        }
 
        cout << word << " ";
    }
 
    cout << endl;
 
    return 0;
}
 

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