#include<stdio.h>
struct Nickname
{
	char name[21];
	int num;
}a[101];
void exchange(struct Nickname*x,struct Nickname*y)
{
	struct Nickname z;
	z=*x;
	*x=*y;
	*y=z;
}
int main()
{
	int t,n,i,j;
	void exchange(struct Nickname*x,struct Nickname*y);
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&n);
		for(i=0;i<n;i++)
		{
			scanf("%s%d",a[i].name,&a[i].num);
		}
		for(j=0;j<n-1;j++)
		{
			for(i=0;i<n-1-j;i++)
			{
				if(a[i].num<a[i+1].num)
				{
					exchange(&a[i],&a[i+1]);
				}
			}
		}
		for(i=0;i<n;i++)
		{
			printf("%s\n",a[i].name);
		}
	}getchar();getchar();
	getchar();
	return 0;
}