4

import java.io.*;
import java.util.*;

class Main {
    public static final void main(final String[] args) throws IOException {
        try (final var writer = new PrintWriter(System.out)) {
            final var arr = new BufferedReader(new FileReader("src/k8.txt")).readLine().toCharArray();
            final var vec = new ArrayList<String>();
            final var cur = new StringBuilder("" + arr[0]);
            var maxSize = 0;

            for (int i = 1; i < arr.length; i++) {
                if (arr[i] != arr[i - 1]) {
                    maxSize = Math.max(cur.length(), maxSize);
                    vec.add(cur.toString());
                    cur.setLength(0);
                }

                cur.append(arr[i]);
            }

            final var moveMaxSize = maxSize;

            vec
                    .stream()
                    .sorted(Comparator.comparing(String::length))
                    .dropWhile(s -> s.length() != moveMaxSize)
                    .map(String::toCharArray)
                    .forEach(st -> writer.println(st[0] + " " + st.length));
        }
    }
}