#include<iostream>
#include<vector>
#include<sstream>
using namespace std;
int main(){
    string s;
    getline(cin,s);
    for
    if(!isValid(s)){
        cout<<"Invalid input";
        return 0;
    }
    vector<string>words;
    string word;
    stringstream ss(s);
    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.length()-1;
        while(end>=0 && line.[end]='')
        end--;
        cout<,line.substr(0,end + 1)<<endl;
    }
    return 0;
}
}