const int merah = 1 ;
const int kuning = 2;
const int hijau = 3;

const int merah1 = 4 ;
const int kuning1 = 5;
const int hijau1 = 6;

const int merah2 = 7 ;
const int kuning2 = 8;
const int hijau2 = 9;

void setup() {
  pinMode(merah, OUTPUT);
  pinMode(kuning, OUTPUT);
  pinMode(hijau, OUTPUT);

  pinMode(merah1, OUTPUT);
  pinMode(kuning1, OUTPUT);
  pinMode(hijau1, OUTPUT);

  pinMode(merah2, OUTPUT);
  pinMode(kuning2, OUTPUT);
  pinMode(hijau2, OUTPUT);

}

void loop() {
  digitalWrite(merah, HIGH);
  digitalWrite(merah1, HIGH);
  digitalWrite(merah2, HIGH);
  delay(2000);
  digitalWrite(merah, LOW);
  digitalWrite(kuning, HIGH);
  delay(1000);
  digitalWrite(kuning, LOW);
  digitalWrite(hijau, HIGH);
  delay(5000);
  digitalWrite(hijau, LOW);

  digitalWrite(merah, HIGH);
  digitalWrite(merah2, HIGH);
  digitalWrite(merah1, LOW);
  digitalWrite(kuning1, HIGH);
  delay(1000);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, HIGH);
  delay(5000);
  digitalWrite(hijau1, LOW);

  digitalWrite(merah, HIGH);
  digitalWrite(merah1, HIGH);
  digitalWrite(merah2, LOW);
  digitalWrite(kuning2, HIGH);
  delay(1000);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, HIGH);
  delay(5000);
  digitalWrite(hijau2, LOW);

}