#define MERAH A0
#define KUNING A1
#define HIJAU A2

int lambat = 1500;
int cepat = 500;

void setup() {
  pinMode(MERAH, OUTPUT);
  pinMode(KUNING, OUTPUT);
  pinMode(HIJAU, OUTPUT);
}

void loop() {

  
  digitalWrite(MERAH, HIGH);
  delay(lambat);
  digitalWrite(MERAH, LOW);

  digitalWrite(KUNING, HIGH);
  delay(lambat);
  digitalWrite(KUNING, LOW);

  digitalWrite(HIJAU, HIGH);
  delay(lambat);
  digitalWrite(HIJAU, LOW);

  delay(2000);


  
  digitalWrite(MERAH, HIGH);
  delay(cepat);
  digitalWrite(MERAH, LOW);

  digitalWrite(KUNING, HIGH);
  delay(cepat);
  digitalWrite(KUNING, LOW);

  digitalWrite(HIJAU, HIGH);
  delay(cepat);
  digitalWrite(HIJAU, LOW);

  delay(2000);


  
  digitalWrite(HIJAU, HIGH);
  delay(cepat);
  digitalWrite(HIJAU, LOW);

  digitalWrite(KUNING, HIGH);
  delay(cepat);
  digitalWrite(KUNING, LOW);

  digitalWrite(MERAH, HIGH);
  delay(cepat);
  digitalWrite(MERAH, LOW);

  delay(2000);



  digitalWrite(HIJAU, HIGH);
  delay(lambat);
  digitalWrite(HIJAU, LOW);

  digitalWrite(KUNING, HIGH);
  delay(lambat);
  digitalWrite(KUNING, LOW);

  digitalWrite(MERAH, HIGH);
  delay(lambat);
  digitalWrite(MERAH, LOW);

  delay(3000);

}