#include<iostream>
#include<string>
#include<cctype>
using namespace std;

class TextProcessor {
    public:
    static void convert(string s){
    
        for(char c : s){
        if(!isalpha((unsigned char)c) && c != ' '){
        cout << "Invalid input\n";
        return;
    }
}
    
        for(char &c : s) 
        c = toupper((unsigned char)c);
        cout<<s<<"\n";
    
    }
};
int TextProcessor::count = 0;

int main() {
    int n;
    cin>>n;
    cin.ignore();
    
    while(n--){
        string s;
        getline(cin,s);
        TextProcessor::convert(s);
    }
}