int utaraMerahPin = 4;
int utaraKuningPin = 3;
int utaraHijauPin = 2;
int selatanMerahPin = 7;
int selatanKuningPin = 6;
int selatanHijauPin = 5;
int baratMerahPin = 10;
int baratKuningPin = 9;
int baratHijauPin = 8;
int timurMerahPin = 13;
int timurKuningPin = 12;
int timurHijauPin = 11;

int waktuFase1 = 2000;
int waktuFase2 = 2000;
int waktuFase3 = 2000;
int waktuFase4 = 2000;

void setup() {
  pinMode(utaraMerahPin, OUTPUT);
  pinMode(utaraKuningPin, OUTPUT);
  pinMode(utaraHijauPin, OUTPUT);
  pinMode(selatanMerahPin, OUTPUT);
  pinMode(selatanKuningPin, OUTPUT);
  pinMode(selatanHijauPin, OUTPUT);
  pinMode(baratMerahPin, OUTPUT);
  pinMode(baratKuningPin, OUTPUT);
  pinMode(baratHijauPin, OUTPUT);
  pinMode(timurMerahPin, OUTPUT);
  pinMode(timurKuningPin, OUTPUT);
  pinMode(timurHijauPin, OUTPUT);
}

void loop() {
  digitalWrite(utaraMerahPin, LOW);
  digitalWrite(utaraKuningPin, LOW);
  digitalWrite(utaraHijauPin, HIGH);

  digitalWrite(selatanMerahPin, HIGH);
  digitalWrite(selatanKuningPin, LOW);
  digitalWrite(selatanHijauPin, LOW);

  digitalWrite(baratMerahPin, HIGH);
  digitalWrite(baratKuningPin, LOW);
  digitalWrite(baratHijauPin, LOW);

  digitalWrite(timurMerahPin, HIGH);
  digitalWrite(timurKuningPin, LOW);
  digitalWrite(timurHijauPin, LOW);

  delay(waktuFase1);

  digitalWrite(utaraHijauPin, LOW);
  digitalWrite(utaraKuningPin, HIGH);
  delay(1000);
  digitalWrite(utaraKuningPin, LOW);
  digitalWrite(utaraMerahPin, HIGH);


  digitalWrite(selatanMerahPin, LOW);
  digitalWrite(selatanKuningPin, LOW);
  digitalWrite(selatanHijauPin, HIGH);

  digitalWrite(baratMerahPin, HIGH);
  digitalWrite(baratKuningPin, LOW);
  digitalWrite(baratHijauPin, LOW);

  digitalWrite(timurMerahPin, HIGH);
  digitalWrite(timurKuningPin, LOW);
  digitalWrite(timurHijauPin, LOW);

  delay(waktuFase2);

  digitalWrite(selatanHijauPin, LOW);
  digitalWrite(selatanKuningPin, HIGH);
  delay(1000);
  digitalWrite(selatanKuningPin, LOW);
  digitalWrite(selatanMerahPin, HIGH);


  digitalWrite(baratMerahPin, LOW);
  digitalWrite(baratKuningPin, LOW);
  digitalWrite(baratHijauPin, HIGH);

  digitalWrite(timurMerahPin, HIGH);
  digitalWrite(timurKuningPin, LOW);
  digitalWrite(timurHijauPin, LOW);

  delay(waktuFase3);

  digitalWrite(baratHijauPin, LOW);
  digitalWrite(baratKuningPin, HIGH);
  delay(1000);
  digitalWrite(baratKuningPin, LOW);
  digitalWrite(baratMerahPin, HIGH);


  digitalWrite(timurMerahPin, LOW);
  digitalWrite(timurKuningPin, LOW);
  digitalWrite(timurHijauPin, HIGH);

  digitalWrite(utaraMerahPin, HIGH);
  digitalWrite(utaraKuningPin, LOW);
  digitalWrite(utaraHijauPin, LOW);

  delay(waktuFase4);


  digitalWrite(timurHijauPin, LOW);
  digitalWrite(timurKuningPin, HIGH);
  delay(1000);
  digitalWrite(timurKuningPin, LOW);
  digitalWrite(timurMerahPin, HIGH);
}