Make an S.O.S. Signal with an LED!

void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
digitalWrite(13, HIGH);
delay(500);
digitalWrite(13, LOW);
delay(500);
}