void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(14, OUTPUT);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(2, OUTPUT);
  pinMode(15, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(27, INPUT);
}

void loop() {
  int swtch=digitalRead(27);
  if (swtch==1){
  digitalWrite(14, HIGH);
  digitalWrite(2, HIGH);
  delay(3000);
  digitalWrite(14, LOW);
  digitalWrite(2, LOW);
  digitalWrite(13, HIGH);
  digitalWrite(15, HIGH);
  delay(3000);
  digitalWrite(13, LOW);
  digitalWrite(15, LOW);
  digitalWrite(12, HIGH);
  digitalWrite(4, HIGH);
  delay(3000);
  digitalWrite(12, LOW);
  digitalWrite(4, LOW);
}
}