#include<iostream>
#include<string>
#include<cctype>
using namespace std;
class TextProcessor
{
    private:
    static int successCount;
    public:
    static string toUpperCase(const string &str)
    {
        for(char ch: str)
        {
            if(!isalpha(ch))
            {
                return " ";
            }
        }
        string result = str;
        for (char &ch : result)
        {
            ch = toupper(ch);
        }
        successCout++;
        return result;
    }
    static int getSuccessCount()
    {
        return successCount;
    }
};
int TextProcessor::successCount = 0;
int main()
{
    int n;
    cin >>n;
    cin.ignore();
    for (int i=0;i<n;i++)
    {
        string input;
        getline(cin,input);
        string result = TextProcessor::toUpperCase(input);
        if(result == "")
        {
            cout<<"Invalid input"<<endl;
        }
        else 
        {
            cout<<result<<endl;
        }
    }
return 0;