void Eins()
{
  digitalWrite(6, HIGH);
  delay(500);
  digitalWrite(6, LOW);
  delay(200);
}

void Zwei()
{
  digitalWrite(2, HIGH);
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  digitalWrite(10, LOW);
  delay(200);
}

void Drei()
{
  digitalWrite(2, HIGH);
  digitalWrite(6, HIGH);
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  digitalWrite(6, LOW);
  digitalWrite(10, LOW);
  delay(200);
}

void Vier()
{
  digitalWrite(2, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  digitalWrite(4, LOW);
  digitalWrite(8, LOW);
  digitalWrite(10, LOW);
  delay(200);
}

void Fuenf()
{
  digitalWrite(2, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(6, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  digitalWrite(4, LOW);
  digitalWrite(6, LOW);
  digitalWrite(8, LOW);
  digitalWrite(10, LOW);
  delay(200);
}

void Sechs()
{
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  delay(500);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  delay(200);
}

void setup() 
{
  Serial.begin(115200);
  Serial.println("Zahl eingeben!");
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
}

void loop() 
{
int a = Serial.parseInt();
  if (a==1)
    Eins();

  else if (a==2)
    Zwei();

  else if (a==3)
    Drei();

  else if (a==4)
    Vier();

  else if (a==5)
    Fuenf();

  else if (a==6)
    Sechs();
}