int const led = 13;

void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
    digitalWrite(led, HIGH);
    delay(500);
    digitalWrite(led, LOW);
    delay(100);
    digitalWrite(led, HIGH);
    delay(300);
    digitalWrite(led, LOW);
    delay(200);
    digitalWrite(led, HIGH);
    delay(1100);
    digitalWrite(led, LOW);
    delay(600);
  }