void setup() {
  Serial.begin(115200);
  pinMode(27, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(25, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  delay(100);
  digitalWrite(27, HIGH);
  digitalWrite(2, LOW);
  digitalWrite(4, HIGH);
  digitalWrite(12, LOW);
  digitalWrite(25,LOW);
  digitalWrite(5, LOW);
  delay(1000);
  digitalWrite(2,LOW);
  digitalWrite(27, LOW);
  digitalWrite(12, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5,HIGH);
  digitalWrite(25,HIGH);
  delay(1000);
  digitalWrite(12, HIGH);
  digitalWrite(2, HIGH);
  digitalWrite(27, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(25, LOW);
  delay(1000);
}