void setup() {
  //
  Serial.begin(115200);
  pinMode(19, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(5, OUTPUT);

  pinMode(15, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(4, OUTPUT);

  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(14, OUTPUT);
}

void loop() {
  //
  digitalWrite (19, HIGH);
  digitalWrite (15, HIGH);
  digitalWrite (14, HIGH);
  delay(2500);

  digitalWrite (19, LOW);
  digitalWrite (15, LOW);
  digitalWrite (14, LOW);
  delay(1111);

  digitalWrite (19, HIGH);
  digitalWrite (15, HIGH);
  digitalWrite (12, HIGH);
  delay(2500);

  digitalWrite (19, LOW);
  digitalWrite (15, LOW);
  digitalWrite (12, LOW);
  delay(1111);

  digitalWrite (13, HIGH);
  digitalWrite (19, HIGH);
  digitalWrite (4,  HIGH);
  delay(2500);

  digitalWrite (13, LOW);
  digitalWrite (19, LOW);
  digitalWrite (4,  LOW);
  delay(1111);

  digitalWrite (13, HIGH);
  digitalWrite (19, HIGH);
  digitalWrite (2,  HIGH);
  delay(2500);

  digitalWrite (13, LOW);
  digitalWrite (19, LOW);
  digitalWrite (2,  LOW);
  delay(1111);

  digitalWrite (15, HIGH);
  digitalWrite (13, HIGH);
  digitalWrite (5,  HIGH);
  delay(2500);

  digitalWrite (15, LOW);
  digitalWrite (13, LOW);
  digitalWrite (5,  LOW);
  delay(1111);

  digitalWrite (15, HIGH);
  digitalWrite (13, HIGH);
  digitalWrite (18, HIGH);
  delay(2500);

  digitalWrite (15, LOW);
  digitalWrite (13, LOW);
  digitalWrite (18, LOW);
  delay(1111);
}