void setup() {
  // put your setup code here, to run once:
  pinMode(27, OUTPUT);
  pinMode(26, OUTPUT);
  pinMode(25, OUTPUT);
  pinMode(17, OUTPUT);
  pinMode(16, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(13, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(27, HIGH);
  digitalWrite(26, LOW);
  digitalWrite(25, LOW);
  digitalWrite(17, LOW);
  digitalWrite(16, LOW);
  digitalWrite(15, HIGH);
  digitalWrite(14, LOW);
  digitalWrite(13, LOW);
  delay(1000);

  digitalWrite(27, HIGH);
  digitalWrite(26, LOW);
  digitalWrite(25, LOW);
  digitalWrite(17, HIGH);
  digitalWrite(16, HIGH);
  digitalWrite(15, HIGH);
  digitalWrite(14, HIGH);
  digitalWrite(13, HIGH);
  delay(1000);

  digitalWrite(27, HIGH);
  digitalWrite(26, HIGH);
  digitalWrite(25, LOW);
  digitalWrite(17, LOW);
  digitalWrite(16, HIGH);
  digitalWrite(15, LOW);
  digitalWrite(14, LOW);
  digitalWrite(13, LOW);
  delay(1000);
}