void setup() {
  DDRA = B11111111;  
  Serial.begin(9600);
} 

void loop() {
  for (int i = 0; i < 13 ; i++) {
    PORTA = B00000001;
    delay(10);
    PORTA = B00000010;
    delay(10);
    PORTA = B00000100;
    delay(10);
    PORTA = B00001000;
    delay(10);
  }
  delay(1000);

  for (int i = 0; i < 13; i++) {
    PORTA = B00000001;
    delay(10);
    PORTA = B00000010;
    delay(10);
    PORTA = B00000100;
    delay(10);
    PORTA = B00001000;
    delay(10);
  }
  delay(1000);

  for (int i = 0; i < 25; i++) {
    PORTA = B00001000;
    delay(10);
    PORTA = B00000100;
    delay(10);
    PORTA = B00000010;
    delay(10);
    PORTA = B00000001;
    delay(10);
  }
  delay(1000);

  for (int i = 0; i < 25; i++) {
    PORTA = B00001000;
    delay(10);
    PORTA = B00000100;
    delay(10);
    PORTA = B00000010;
    delay(10);
    PORTA = B00000001;
    delay(10);
  }
  delay(1000);
  
}