int Tekan;
void setup(){
  pinMode (2, OUTPUT);
  pinMode (4, OUTPUT);
}
void loop(){
  int buttonState = digitalRead (13);
  if (buttonState == LOW){
    Tekan ++;
    delay (200);
    if (Tekan == 1)
    ledOn1 ()
    if (Tekan == 2)
    ledOn2 ()
    if (Tekan == 3)
    ledOn3 ()
    else if ()
    LedOff (HIGH);
  }
void ledOn1(){
  digitalWrite(2, HIGH);
  digitalWrite(4,LOW);
}
void ledOn2(){
  digitalWrite(2,LOW);
  digitalWrite(4,HIGH);
}
void ledOn3(){
  digitalWrite(2,HIGH);
  digitalWrite(4,HIGH);
}
void LedOff(){
  digitalWrite(2,LOW);
  digitalWrite(4,LOW);
}
}