void setup() {                      //The setup function runs once when you press reset or power the board
  pinMode(13, OUTPUT);     //Initialize digital pin LED_BUILTIN as an output
  pinMode(12, OUTPUT);    //Initialize digital pin LED_BUILTIN_2 as an output
  pinMode(11, OUTPUT);
}

void loop() {
  //Loop function that executes the code infinitely many times

  digitalWrite(13, HIGH); 
  digitalWrite(12, LOW);
  digitalWrite(11, LOW);

  //delay the next line of code from running for 1000 milliseconds (1 second)
  delay(1000);

  digitalWrite(13, LOW);   
  digitalWrite(12, HIGH);
  digitalWrite(11, LOW);

  delay(500);

  digitalWrite(13, LOW);   
  digitalWrite(12, LOW);
  digitalWrite(11, HIGH);

  delay(1000);
  

}