#define rot 4
#define gruen 3
#define blau 2
#define frot 8
#define fgruen 9
#define taster 7

void setup() {
  pinMode(rot, OUTPUT);
  pinMode(gruen, OUTPUT);  
  pinMode(blau, OUTPUT);
  pinMode(frot, OUTPUT);
  pinMode(fgruen, OUTPUT);
  pinMode(taster, INPUT_PULLUP);
}

void loop() {
  // gruen
  digitalWrite(rot, LOW);
  digitalWrite(gruen, HIGH);
  digitalWrite(frot, HIGH); 
  if (digitalRead(taster) == LOW) {
    // gelb
    delay(2000);
    digitalWrite(rot, HIGH);
    digitalWrite(gruen, HIGH);
    digitalWrite(frot, HIGH);
    delay(1000);
    // rot
    digitalWrite(rot, HIGH);
    digitalWrite(gruen, LOW);
    delay(1500);
    digitalWrite(frot, LOW);
    digitalWrite(fgruen, HIGH);
    delay(3000);
    // rot-gelb
    digitalWrite(frot, HIGH);
    digitalWrite(fgruen, LOW);
    delay(1500);
    digitalWrite(rot, HIGH);
    digitalWrite(gruen, HIGH);
    delay(1000);
    }
  }