// Program 17: Words Containing the Last Shortest Word

import java.util.*;
class ShortestContained {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine().trim();
        String[] words = s.split(" +");
        String shortest = words[0];
        for (String word : words) {
            if (word.length() <= shortest.length()) {
                shortest = word;
            }
        }
        System.out.println("Sentence: " + s);
        System.out.println("Last shortest word: " + shortest);
        for (String word : words) {
            if (word.indexOf(shortest) >= 0) {
                System.out.println(word);
            }
        }
    }
}