void setup() {
  for (int i = 2; i <= 13; i++)
  {
    pinMode(i, OUTPUT);
    if (i>10)
    {
      digitalWrite(i,HIGH);
    }
    else
    {
      digitalWrite(i, LOW);
    }
  }

}

void loop() {
  for (int i = 11; i <= 13; i++)
  {
    if (i == 11)
    {
      digitalWrite(i, LOW);
      for (int j = 2; j <= 10; j++)
      {
        digitalWrite(j, HIGH);
        delay(500);
      }
    }
    else if (i == 12)
    {
      for (int j = 2; j <= 10; j++)
      {
        delay(500);
        digitalWrite(11, HIGH);
        for (int k = 2; k <= 10; k++)
        {
          digitalWrite(k, LOW);
        }
        digitalWrite(12, LOW);
        for (int k = 2; k <= j; k++)
        {
          digitalWrite(k, HIGH);
        }

        digitalWrite(12, HIGH);
        digitalWrite(11, LOW);
        for (int k = 2; k <= 10; k++)
        {
          digitalWrite(k, HIGH);
        }
      }
    }
    else if (i == 13)
    {
      for (int j = 2; j <= 10; j++)
      {
        delay(500);
        digitalWrite(11, HIGH);
        digitalWrite(12, HIGH);
        for (int k = 2; k <= 10; k++)
        {
          digitalWrite(k, LOW);
        }
        digitalWrite(13, LOW);
        for (int k = 2; k <= j; k++)
        {
          digitalWrite(k, HIGH);
        }
        digitalWrite(13, HIGH);
        digitalWrite(12, LOW);
        digitalWrite(11, LOW);
        for (int k = 2; k <= 10; k++)
        {
          digitalWrite(k, HIGH);
        }
      }
   }
}