void setup(){
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(2, INPUT_PULLUP);
}
void loop(){
  boolean button = digitalRead(2);
  if (!button){
    digitalWrite(13, HIGH);
    delay(200);
    digitalWrite(12, HIGH);
    delay(200);
    digitalWrite(13, LOW);
    delay(200);
    digitalWrite(11, HIGH);
    delay(200);
    digitalWrite(12, LOW);
    delay(200);
    digitalWrite(13, HIGH);
    delay(200);
    digitalWrite(11, LOW);
    delay(200);
    digitalWrite(13, LOW);
  }
}