#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
char a[100000]={0};
int main(void)
{
	int t,i,cou=0,j;
	string s;
	freopen("abbreviation.in","r",stdin);
	freopen("abbreviation.out","w",stdout);
	cin>>t;
	for(i=0; i<t; i++)
	{
		cou=0;
		while(1)
		{
			cin>>s;
			if(s.length() >2 && s!="for" && s!= "and" &&s!= "the"&& s!="THE" && s!="For" && s!="And"&& s!="The")
			{
				a[cou]=s[0];
				cou++;
			}
			if(cin.peek()== '\n' || cin.peek() == '\r'||cin.peek()==-1)
				break;
		}
		for(j=0; j<cou; j++)
		{
			printf("%c",toupper(a[j]));
		}
		cout<<endl;
	}
	return 0;
}