void setup() {
 pinMode(13,OUTPUT);
 pinMode(12,OUTPUT);
 pinMode(11,OUTPUT);
}

void loop() {
  /*
  digitalWrite(13,HIGH); 
  delay(1000);
  digitalWrite(13,LOW);
  delay(1000);
  digitalWrite(12,HIGH);
  delay(1000);
  digitalWrite(12,LOW);
  delay(1000);
  digitalWrite(11,HIGH);
  delay(1000);
  digitalWrite(11,LOW);
  delay(1000);
  */
  digitalWrite(13,HIGH);
  digitalWrite(12,HIGH);
  digitalWrite(11,HIGH);
  delay(1000);
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  delay(1000);

}