Increasing4Numbers

import java.util.Scanner;

public class Increasing4Numbers{
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = Integer.parseInt(scanner.nextLine());
        int b = Integer. parseInt(scanner.nextLine());
        int count = 0;

        for ( int i = a; i <= b ; i++) {
            for (int j = i + 1; j < b ; j++) {
                System.out.printf("%d %d %n", i, j);
            }
        }
        for ( int i = a; i <= b ; i++) {
            for (int j = i + 1; j <=b; j++) {
                for ( int k = j + 1; k<=b; k++) {
                    for(int l = k + 1; 1 <= b; l++) {
                        System.out.printf(
                                "%d %d %d %d%n", i,j,k,l);
                        count++;
                    }
                }
            }
        }
        if (count == 0) {
            System.out.print("No");
        }
    }


}