void setup() {
 
  pinMode(11, OUTPUT);  
  pinMode(12, OUTPUT);  
  pinMode(13, OUTPUT);  
}

void loop() {
 
  for (int a = 0; a < 10; a++) {
    for (int i = 11; i <= 13; i++) {
      digitalWrite(i, HIGH);
      delay(80);  
      digitalWrite(i, LOW);
    }
  }

  for (int b = 0; b < 3; b++) {
    for (int j = 0; j < 2; j++) {
      digitalWrite(13, LOW);
      delay(200);
      digitalWrite(13, HIGH);
      delay(500);
      digitalWrite(13, LOW);
      delay(500);
      digitalWrite(13, HIGH);
      delay(80);
      digitalWrite(12, HIGH);
      delay(500);
      digitalWrite(13, LOW);
      digitalWrite(12, LOW);
      delay(500);
      digitalWrite(13, HIGH);
      delay(80);
      digitalWrite(12, HIGH);
      delay(80);
      digitalWrite(11, HIGH);
      delay(500);
      digitalWrite(13, LOW);
      digitalWrite(12, LOW);
      digitalWrite(11, LOW);
      delay(500);
    }
  }
}