void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, HIGH);//TURN ON LED
digitalWrite(12, LOW);//TURN ON LED
digitalWrite(11, LOW);
delay(200);
digitalWrite(13, LOW);//TURN ON LED
digitalWrite(12, HIGH);//TURN ON LED
digitalWrite(11, LOW);
delay(200);
digitalWrite(13, LOW);//TURN ON LED
digitalWrite(12, LOW);//TURN ON LED
digitalWrite(11, HIGH);
delay(200);
}