#include <iostream>
#include <cstring>
#include <map>
using namespace std;
int main(){
string str;
cin>>str;
multimap<char,int> m;
int chars[256];
memset(chars,0,sizeof(chars));
for(int i=0;i<str.size();i++){
if(str[i]>=65 && str[i]<=90)
str[i]-=32;
m.insert({str[i],i});
chars[(int)str[i]]++;
}
for(int i=0;i<str.size();i++)
if(chars[(int)str[i]]>1){
for(auto j=m.lower_bound(str[i]);j!=m.upper_bound(str[i]);j++){
if(j!=m.lower_bound(str[i]))
cout<<',';
cout<<j->first<<':'<<j->second;
}
chars[(int)str[i]]=0;
cout<<endl;
}
}