// Define the pins for the LEDs
int ledPin1 = 2;  // Connect first LED to digital pin 2
int ledPin2 = 3;  // Connect second LED to digital pin 3
int ledPin3 = 4;
void setup() {
  // Initialize the digital pins as outputs
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin2, OUTPUT);
}

void loop() {
  // Turn on the first LED
  digitalWrite(ledPin1, HIGH);
  delay(1000);  // Wait for 1 second
  
  // Turn off the first LED and turn on the second LED
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, HIGH);
  delay(1000);  // Wait for 1 second
  
  // Turn off the second LED
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, HIGH);
  delay(1000);
  
  digitalWrite(ledPin3, LOW);

}