void setup() {
  // put your setup code here, to run once:
pinMode(13, INPUT);
pinMode(12, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13,HIGH);
delay(600);
digitalWrite(13, LOW);
delay(600);
digitalWrite(12, HIGH);
delay(600);
digitalWrite(12, LOW);
delay(600);
digitalWrite(11,HIGH);
delay(600);
digitalWrite(11, LOW);
delay(600);
digitalWrite(13,HIGH);
digitalWrite(12, HIGH);
delay(600);
digitalWrite(13, LOW);
digitalWrite(12, LOW);
delay(600);
digitalWrite(13,HIGH);
digitalWrite(12,HIGH);
digitalWrite(11,HIGH);
delay(600);
digitalWrite(13, LOW);
digitalWrite(12, LOW);
digitalWrite(11, LOW);
delay(600);
digitalWrite(12,HIGH);
digitalWrite(11,HIGH);
delay(600);
digitalWrite(12, LOW);
digitalWrite(11, LOW);
delay(600);
digitalWrite(13,HIGH);
digitalWrite(11,HIGH);
delay(600);
digitalWrite(13, LOW);
digitalWrite(11, LOW);
delay(600);
}