void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);
  digitalWrite(13,1);
  digitalWrite(12,1);
  digitalWrite(11,1);
  digitalWrite(10,1);
}

void loop() {
  digitalWrite(13,0);
  delay(1000);
  digitalWrite(13,1);
  digitalWrite(12,0);
  delay(1000);
  digitalWrite(12,1);
  digitalWrite(11,0);
  delay(1000);
  digitalWrite(11,1);
  digitalWrite(10,0);
  delay(1000);
  digitalWrite(10,1);
  digitalWrite(13,0);
  delay(1000);
  digitalWrite(12,0);
  delay(1000);
  digitalWrite(11,0);
  delay(1000);
  digitalWrite(10,0);
  delay(5000);
  digitalWrite(13,1);
  digitalWrite(12,1);
  digitalWrite(11,1);
  digitalWrite(10,1);
  delay(5000);
}