int merah1 = 1;
int kuning1 = 2;
int hijau1 = 3;

int merah2 = 4;
int kuning2 = 5;
int hijau2 = 6;

int merah3 = 7;
int kuning3 = 8;
int hijau3 = 9;

int merah4 = 10;
int kuning4 = 11;
int hijau4 = 12;

void setup (){
  pinMode(merah1, OUTPUT);
  pinMode(kuning1, OUTPUT);
  pinMode(hijau1, OUTPUT);

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

  pinMode(merah3, OUTPUT);
  pinMode(kuning3, OUTPUT);
  pinMode(hijau3, OUTPUT);

  pinMode(merah4, OUTPUT);
  pinMode(kuning4, OUTPUT);
  pinMode(hijau4, OUTPUT);

}

void loop(){
  //1
  digitalWrite(merah1, LOW);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, HIGH);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //2
  digitalWrite(merah1, LOW);
  digitalWrite(kuning1, HIGH);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //3
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, LOW);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, HIGH);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //4
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, LOW);
  digitalWrite(kuning2, HIGH);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //5
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, LOW);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, HIGH);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //6
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, LOW);
  digitalWrite(kuning3, HIGH);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, HIGH);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, LOW);
  delay(500);

  //7
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, LOW);
  digitalWrite(kuning4, LOW);
  digitalWrite(hijau4, HIGH);
  delay(500);

  //8
  digitalWrite(merah1, HIGH);
  digitalWrite(kuning1, LOW);
  digitalWrite(hijau1, LOW);
  digitalWrite(merah2, HIGH);
  digitalWrite(kuning2, LOW);
  digitalWrite(hijau2, LOW);
  digitalWrite(merah3, HIGH);
  digitalWrite(kuning3, LOW);
  digitalWrite(hijau3, LOW);
  digitalWrite(merah4, LOW );
  digitalWrite(kuning4, HIGH);
  digitalWrite(hijau4, LOW);
  delay(500);

}