#include<iostream>
#include<string>
using namespace std;
string s;
string tmp;
int main(int argc, char *argv[])
{
    int m,n;
    int j;
    int i;
    int cnt=0;
    while(cin>>m>>n)
    {
        for(i=0;i<m;++i)
        {
            tmp="";
            cin>>s;
            cnt=0;//逗号的个数
            for(j=1;j<=s.size();++j){
                if(j%n==0){
                    tmp+=s[j-1];
                    tmp+=',';
                    cnt++;
                }
                else
                    tmp+=s[j-1];
            }
            int size=tmp.size();
            while(size<(cnt+1)*n+cnt){
                tmp+='0';
                size++;
            }
            cout<<tmp<<endl;
        }
    }
    return 0;
}