#include <bits/stdc++.h>
using namespace std;
 
int main() {
    int n = 0,t;
    string s[1000], k;
	while(cin>>k)
	{
		s[n]=k;
		n++;	
	}	
 
    if(n/12>=1)
    {
    	t=0;
        int count=0;
        string b[13];
        for(int i=0;i<n;i++)
        {
            count++;
            if(count<=12)
            {
                b[t]=s[i];
                t++;
               // cout<<t<<endl;
            }
            if(count==12 || i==n-1)
            {
                for(int j=0;j<t;j++)
                {
                	if(j!=t-1)
                		cout<<b[j]<<",";
                	else
                		cout<<b[j]<<endl;
                }
                cout<<endl;
                t=0;
                count=0;
                if(i==n-1)
                	break;
            }
        }
    }
    else
    {
        //string b[10];
    	for(int j=0;j<n;j++)
        {
        	if(j!=n-1)
        		cout<<s[j]<<",";
        	else
        		cout<<s[j]<<endl;
        }
    }
	cout<<"hello"<<endl;
	return 0;
}
 

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