void setup() {
  // put your setup code here, to run once:
  pinMode(5, OUTPUT);
  pinMode(18, OUTPUT);
  pinMode(19, OUTPUT);
  pinMode(4, INPUT);
  pinMode(2, INPUT_PULLUP);
}

void loop() {

  int status = digitalRead(2);
  if(status == HIGH){
    digitalWrite(5,HIGH);
    delay(200);
    digitalWrite(18,HIGH);
    delay(200);
    digitalWrite(19,HIGH);
    delay(200);
    digitalWrite(5,LOW);
    delay(200);
    digitalWrite(18,LOW);
    delay(200);
    digitalWrite(19,LOW);
    delay(200);
  }else{
    digitalWrite(19,HIGH);
    delay(200);
    digitalWrite(18,HIGH);
    delay(200);
    digitalWrite(5,HIGH);
      delay(200);
    digitalWrite(19,LOW);
      delay(200);
    digitalWrite(18,LOW);
      delay(200);
    digitalWrite(5,LOW);
      delay(200);
  }
}