#include<iostream>
#include<sstream>
#include<vector>
#include<cctype>
using namespace std;

int main()
{
    string line;
    getline(cin,line);
     for(char c:line)
     {
         if(!(isalpha(c)||c==''))
         {
             cout<<"Invalid input";
             return 0;
         }
     }
     stringstream ss(line);
     vector<string>words;
     string w;
     while(ss>>w)
     words.push_back(w);
     int maxLen=0;
     for(string s:words)
     if(s.length()>maxLen)
     maxLen=s.length();
     for(int i=0;i<maxLen;i++)
     {
         for(int j=0;j<maxLen;j++)
         {
             if(i<words[j].length())
             cout<<words[j][i];
             else
             cout<<"";
         }
         cout<<endl;
     }
     return 0;
}