#include<iostream>
#include<vector>
#include<sstream>
using namespace std;
int main()
{
    string s;
    getline(cin,s);
    
    for(char c : s)

    {
        if(!(isalpha(c) || c==' '))
        {
            cout<<"Invalid input";
            return 0;
        }
    }
    
    vector<string> words;
    stringstrea, ss(s);
    string word;
    while(ss>>word)
    {
        words.push_back(word);
    }
    int maxLen=0;
    for(string w:words)
    {
        if(w.length()>maxLen)
        maxLen = w.length();
    }
    for(int i=0;i<maxLen;i++)
    {
        string line="";
        for(int j=0;j<words.size();j++)
        {
            if(i<words[j].length())
            line+=words[j][i];
            else
            line+=' ';
        }
        int end=line.find_last_not_of(' ');
        if(end !=string::npos)
        cout<<line.substr(0,end+ 1);
        cout<<endl;
    }
    return 0;
}