> #include <iostream>
> #include <map>
> #include <string>
> using namespace std;
> 
> typedef map<string,int,less<string> > NumberType;
> typedef map<string,int,less<string> >::iterator NumberType_IT;
> 
> NumberType Dict;
> 
> void check(string &Number)
> {
> 	int pos=Number.find_first_of('-');
> 	while (pos>-1)
> 	{
> 		Number.erase(pos,1);
> 		pos=Number.find_first_of('-');
> 	}
> 	for (int i=0;i<Number.length();i++)
> 	{
> 		switch (Number[i])
> 		{
> 			case 'A' :
> 			case 'B' :
> 			case 'C' : Number[i]='2';
> 				       break;
> 			case 'D' :
> 			case 'E' :
> 			case 'F' : Number[i]='3';
> 					   break;
> 			case 'G' :
> 			case 'H' :
> 			case 'I' : Number[i]='4';
> 				       break;
> 			case 'J' :
> 			case 'K' :
> 			case 'L' : Number[i]='5';
> 				       break;
> 			case 'M' : 
> 			case 'N' :
> 			case 'O' : Number[i]='6';
> 				       break;
> 			case 'P' :
> 			case 'R' :
> 			case 'S' : Number[i]='7';
> 				       break;
> 			case 'T' :
> 			case 'U' :
> 			case 'V' : Number[i]='8';
> 				       break;
> 			case 'W' :
> 			case 'X' :
> 			case 'Y' : Number[i]='9';
> 				       break;
> 		}
> 	}
> 	Number.insert(3,"-");
> }
> 
> int main()
> {
> 	int n;
> 	cin >> n;
> 	for (int i=0;i<n;i++)
> 	{
> 		string Number;
> 		cin >> Number;
> 		check(Number);
> 		NumberType_IT it;
> 		Dict[Number]++;
> 	}
> 	int flag=0;
> 	for (NumberType_IT it=Dict.begin();it!=Dict.end();it++)
> 	{
> 		if (it->second>1)
> 		{
> 			cout << (it->first) << ' ' << (it->second) << endl;
> 			flag++;
> 		}
> 	}
> 	if (flag==0) cout << "No duplicates.";
> 	return 0;
> }