int ledpin = 11;
int ledpin2 = 12;
int ledpin3 = 10;


void setup() {

  // put your setup code here, to run once:
pinMode(LED_BUILTIN, OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(ledpin,HIGH);
  digitalWrite(ledpin, HIGH);
  delay(200);
  digitalWrite(ledpin, LOW);
  digitalWrite(ledpin2, LOW);
  delay(200);
  digitalWrite(ledpin, HIGH);
  delay(200);
  digitalWrite(ledpin2, LOW);
  delay(200);
  digitalWrite(ledpin, HIGH);
  delay(200);
  digitalWrite(ledpin2, LOW);
  delay(200);
  digitalWrite(ledpin,HIGH);
  delay(200);
  digitalWrite(ledpin2, LOW);
  delay(200);
  digitalWrite(ledpin3, HIGH);
  delayMicroseconds(500);
  digitalWrite(ledpin3, LOW);
  delayMicroseconds(500);
  digitalWrite(ledpin3, LOW);
  delayMicroseconds(500);
  digitalWrite(ledpin3, HIGH);
  delayMicroseconds(500);
}