#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main(){
string str;
while(cin >> str){
int len = str.size();
int cnt = 0;
int maxm = 0;
int index = 0;
vector<pair<int ,int>> vec1;//第一个数记录索引,第二个数记录每次的maxm,最后通过最大的maxm,进行筛选。
vector<int> vec_Index;
for(int i = 0; i < len; i++){
if(str[i] >= '0' && str[i] <= '9'){
cnt++;
continue;
}
if(cnt >= maxm){
maxm = cnt;
index = i-cnt;
cnt = 0;
vec1.push_back(make_pair(index,maxm));
}
else if(cnt < maxm){
cnt = 0;
index = 0;
}
}
if(cnt >= maxm ){//防止最后一串是数字时,cnt不给maxm赋值
maxm = cnt;
index = len-cnt;//循环结束,i=len了
cnt = 0;
vec1.push_back(make_pair(index,maxm));
}
for(int i = 0; i < vec1.size(); i++){//将最大maxm的索引,添加到vec_Index中
if(vec1[i].second == maxm){
vec_Index.push_back(vec1[i].first);
}
}
for(int i = 0; i < vec_Index.size(); i++){
for(int j = vec_Index[i]; j < vec_Index[i] + maxm; j++){
cout << str[j];
}
}
cout << ','<< maxm << endl;
}
}