/**
模拟求出循环节来
*/
#include <stdio.h>
#include <string.h>
#include <map>
#include <string>
using namespace std;
#define N 10000
int main()
{
string st[N],s,ss,sta;
char card[52][3],cc[110];
int l,r,n,t,cas = 0,i,k;
scanf("%d",&t);
while(t--)
{
k = 0;
for(i = 0; i < 52; ++i)
{
scanf("%s",card[i]);
if(card[i][1])
{
cc[k++] = card[i][0];
cc[k++] = card[i][1];
}
else
{
cc[k++] = '0';
cc[k++] = card[i][0];
}
}