#include<iostream>
#include<map>
#include<sstream>
using namespace std;
int main(){
int num,day;
char c;
string s;
int j = 0;
map<int,int> data[2];
while(getline(cin,s),!cin.eof()){
if(s.size()==0){
j++;
continue;
}
stringstream ss(s);
ss>>num>>c>>day;
data[j][num]++;
}
for(auto i:data[0]){
if(data[1][i.first]>0){
cout<<i.first<<" "<<i.second+data[1][i.first]<<endl;
}
}
return 0;
}