void setup() {
  pinMode(8,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(4,OUTPUT);

}

void loop() {
  digitalWrite(8, HIGH);
  digitalWrite(5,LOW);
  digitalWrite(4,LOW);
  delay(5000);

  digitalWrite(8, LOW);
  digitalWrite(5,HIGH);
  digitalWrite(4,LOW);
  delay(5000);

  digitalWrite(8, LOW);
  digitalWrite(5,LOW);
  digitalWrite(4,HIGH);
  delay(5000);

  digitalWrite(8, HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(4,LOW);
  delay(5000);

  digitalWrite(8, LOW);
  digitalWrite(5,HIGH);
  digitalWrite(4,HIGH);
  delay(5000);

  digitalWrite(8, HIGH);
  digitalWrite(5,LOW);
  digitalWrite(4,HIGH);
  delay(5000);

  digitalWrite(8, HIGH);
  digitalWrite(5,HIGH);
  digitalWrite(4,HIGH);
  delay(5000);

}