#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;
        stringstream 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<word.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;
    }