#include<stdio.h>
struct Nickname{
	char name[22];
	int num;}
a[110];
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);}}
		return 0;}