void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
    if(digitalRead(2)==LOW){
      digitalWrite(3, HIGH);
      digitalWrite(4, LOW);
      digitalWrite(5, LOW);
    }else{
      digitalWrite(3, LOW);
      digitalWrite(4, HIGH);
      digitalWrite(5, HIGH);
      delay(1000);
      digitalWrite(5, LOW);
      delay(1000);
      digitalWrite(5, HIGH);
      digitalWrite(4, LOW);
      delay(1000);
      digitalWrite(5, LOW);
      delay(1000);
    }