void setup() {
  pinMode(12, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(4, OUTPUT);
  // put pinyour setup code here, to run once:

}

void loop() {
  digitalWrite(12, HIGH);
  delay(1000);
  digitalWrite(12, LOW);
delay(1000);

digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13,LOW);
delay(1000);

digitalWrite(1, HIGH);
delay(1000);
digitalWrite(1, LOW);
delay(1000);

digitalWrite(4, HIGH);
delay(1000);
digitalWrite(4, LOW);
delay(1000);
  // put your main code here, to run repeatedly:

}