int ledPin = 8;
int delay1 = 500;
int delay2 = 1000;
void setup() {
  // put your setup code here, to run once:
pinMode(ledPin, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(ledPin,HIGH);
delay(delay1);
digitalWrite(ledPin,LOW);
delay(delay1);

digitalWrite(ledPin,HIGH);
delay(delay1);
digitalWrite(ledPin,LOW);
delay(delay1);

digitalWrite(ledPin,HIGH);
delay(delay1);
digitalWrite(ledPin,LOW);
delay(delay1);

digitalWrite(ledPin,HIGH);
delay(delay2);
digitalWrite(ledPin,LOW);
delay(delay2);

digitalWrite(ledPin,HIGH);
delay(delay2);
digitalWrite(ledPin,LOW);
delay(delay2);

digitalWrite(ledPin,HIGH);
delay(delay2);
digitalWrite(ledPin,LOW);
delay(delay2);

delay(2000);
}