const int merah1Pin = 2;
const int kuning1Pin = 3;
const int hijau1Pin = 4;

const int merah2Pin = 5;
const int kuning2Pin = 6;
const int hijau2Pin = 7;

const int merah3Pin = 8;
const int kuning3Pin = 9;
const int hijau3Pin = 10;

void setup() {
  pinMode(merah1Pin, OUTPUT);
  pinMode(kuning1Pin, OUTPUT);
  pinMode(hijau1Pin, OUTPUT);

  pinMode(merah2Pin, OUTPUT);
  pinMode(kuning2Pin, OUTPUT);
  pinMode(hijau2Pin, OUTPUT);

  pinMode(merah3Pin, OUTPUT);
  pinMode(kuning3Pin, OUTPUT);
  pinMode(hijau3Pin, OUTPUT);
}

void loop() {
  digitalWrite(merah1Pin, HIGH);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, HIGH);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, HIGH);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, LOW);
  delay(1000);

  digitalWrite(merah1Pin, LOW);
  digitalWrite(kuning1Pin, HIGH);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, HIGH);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, HIGH);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, LOW);
  delay(1500);

  digitalWrite(merah1Pin, LOW);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, HIGH);
  digitalWrite(merah2Pin, HIGH);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, HIGH);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, LOW);
  delay(5000);

  digitalWrite(merah1Pin, HIGH);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, LOW);
  digitalWrite(kuning2Pin, HIGH);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, HIGH);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, LOW);
  delay(1500);

  digitalWrite(merah1Pin, HIGH);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, LOW);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, HIGH);
  digitalWrite(merah3Pin, HIGH);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, LOW);
  delay(5000);

  digitalWrite(merah1Pin, HIGH);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, HIGH);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, LOW);
  digitalWrite(kuning3Pin, HIGH);
  digitalWrite(hijau3Pin, LOW);
  delay(1500);

  digitalWrite(merah1Pin, HIGH);
  digitalWrite(kuning1Pin, LOW);
  digitalWrite(hijau1Pin, LOW);
  digitalWrite(merah2Pin, HIGH);
  digitalWrite(kuning2Pin, LOW);
  digitalWrite(hijau2Pin, LOW);
  digitalWrite(merah3Pin, LOW);
  digitalWrite(kuning3Pin, LOW);
  digitalWrite(hijau3Pin, HIGH);
  delay(5000);
}