void setup() {
  Serial.begin(115200);
  pinMode(27, OUTPUT);
  pinMode(14, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(17, OUTPUT);
}

void loop() {
  digitalWrite(27, HIGH);
  digitalWrite(17, HIGH);
  delay(1000);
  digitalWrite(27, LOW);
  digitalWrite(17, LOW);
  delay(1000);
  digitalWrite(14, HIGH);
  digitalWrite(5, HIGH);
  delay(1000);
  digitalWrite(14, LOW);
  digitalWrite(5, LOW);
  delay(1000);
  digitalWrite(12, HIGH);
  digitalWrite(18, HIGH);  
  delay(1000);
  digitalWrite(12, LOW);
  digitalWrite(18, LOW);
  delay(1000);
  digitalWrite(14, HIGH);
  digitalWrite(5, HIGH);  
  delay(1000);
  digitalWrite(14, LOW);
  digitalWrite(5,LOW);
  delay(1000);
  }