void setup()
{
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(2, OUTPUT);
}

void loop()
{
  digitalWrite(13, HIGH);
  delay(900);
  digitalWrite(13, LOW);
  delay(500);

  digitalWrite(12, HIGH);
  delay(800);
  digitalWrite(12, LOW);
  delay(500);

  digitalWrite(8, HIGH);
  delay(700);
  digitalWrite(8, LOW);
  delay(500);

  digitalWrite(4, HIGH);
  delay(600);
  digitalWrite(4, LOW);
  delay(500);

  digitalWrite(2, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  delay(500);
  }