class MyThreada extends Thread {
    public void run() {
        while (true) {
            try {
                System.out.println("Good Morning");
                sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

class MyThreadb extends Thread {
    public void run() {
        while (true) {
            try {
                System.out.println("Hello");
                sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

class MyThreadc extends Thread {
    public void run() {
        while (true) {
            try {
                System.out.println("Welcome");
                sleep(3000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

public class MultiThread {
    public static void main(String[] args) {
        MyThreada threadA = new MyThreada();
        MyThreadb threadB = new MyThreadb();
        MyThreadc threadC = new MyThreadc();
        threadA.start();
        threadB.start();
        threadC.start();
    }
}