755

#include<cstdio>
#include<cstring>
#include<string>
#include<map>
#include<vector>
#include<algorithm>

using namespace std;

map<char,char> button;
char tmp[123],tmp2[8];
string tmp3;
int dobel,now,t,n;

int main(){
	button['A']='2'; button['B']='2'; button['C']='2';
	button['D']='3'; button['E']='3'; button['F']='3';
	button['G']='4'; button['H']='4'; button['I']='4';
	button['J']='5'; button['K']='5'; button['L']='5';
	button['M']='6'; button['N']='6'; button['O']='6';
	button['P']='7'; button['R']='7'; button['S']='7';
	button['T']='8'; button['U']='8'; button['V']='8';
	button['W']='9'; button['X']='9'; button['Y']='9';

	scanf("%d",&t); //printf("%d\n",t);
	for(int tc=0;tc<t;tc++){
		map<string,int> phone;
		vector<string> clone;
		dobel=0;
		scanf("%d",&n); //printf("%d\n",n);
		for(int i=0;i<n;i++){
			scanf("%s",tmp); now=0;
			for(int j=0;j<strlen(tmp);j++){
				if(tmp[j]>='A'&&tmp[j]<='Z'){
					tmp2[now]=button[tmp[j]]; now++;
				}else if(tmp[j]>='0'&&tmp[j]<='9'){
					tmp2[now]=tmp[j]; now++;
				}
			}
			tmp3=tmp2;
			phone[tmp3]++;
			//printf("%s %d\n",tmp2,phone[tmp3]);
			if(phone[tmp3]==2){
				dobel++; clone.push_back(tmp3);
			}
		}

		if(dobel==0){
			printf("No Duplicates.");
		}else{
			sort(clone.begin(),clone.end());
			for(int i=0;i<dobel;i++){
				printf("%s-%s %d",clone[i].substr(0,3).c_str(),clone[i].substr(3).c_str(),phone[clone[i]]);
				if(i<dobel-1) printf("\n");
			}
		}
		if(tc<t-1) printf("\n\n");
	}

	return 0;
}