int merah1 = 1;
int merah2 = 4;
int merah3 = 7;
int merah4 = 10;

int kuning1 = 2;
int kuning2 = 5;
int kuning3 = 8;
int kuning4 = 11;

int hijau1 = 3;
int hijau2 = 6;
int hijau3 = 9;
int hijau4 = 12;

void setup() {
  // put your setup code here, to run once:
pinMode(merah1, OUTPUT);
pinMode(merah2, OUTPUT);
pinMode(merah3, OUTPUT);
pinMode(merah4, OUTPUT);

pinMode(kuning1, OUTPUT);
pinMode(kuning2, OUTPUT);
pinMode(kuning3, OUTPUT);
pinMode(kuning4, OUTPUT);

pinMode(hijau1, OUTPUT);
pinMode(hijau2, OUTPUT);
pinMode(hijau3, OUTPUT);
pinMode(hijau4, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
    
    //Kondisi lampu     1
digitalWrite(merah1, LOW);
digitalWrite(merah2, HIGH);
digitalWrite(merah3, HIGH);
digitalWrite(merah4, HIGH);

digitalWrite(kuning1, LOW);
digitalWrite(kuning2, LOW);
digitalWrite(kuning3, LOW);
digitalWrite(kuning4, LOW);

digitalWrite(hijau1, HIGH);
digitalWrite(hijau2, LOW);
digitalWrite(hijau3, LOW);
digitalWrite(hijau4, LOW);

delay(2000);

//transisi stop   1
digitalWrite(hijau1, LOW);
digitalWrite(kuning1, HIGH);
delay(1000);
digitalWrite(kuning1, LOW);
digitalWrite(merah1, HIGH);

delay(200);

//transisi go   1
digitalWrite(kuning2, HIGH);
delay(1000);
digitalWrite(merah2, LOW);
digitalWrite(kuning2, LOW);

    //Kondisi lampu     2
digitalWrite(merah1, HIGH);
digitalWrite(merah2, LOW);
digitalWrite(merah3, HIGH);
digitalWrite(merah4, HIGH);

digitalWrite(kuning1, LOW);
digitalWrite(kuning2, LOW);
digitalWrite(kuning3, LOW);
digitalWrite(kuning4, LOW);

digitalWrite(hijau1, LOW);
digitalWrite(hijau2, HIGH);
digitalWrite(hijau3, LOW);
digitalWrite(hijau4, LOW);

delay(2000);

//transisi stop   2
digitalWrite(hijau2, LOW);
digitalWrite(kuning2, HIGH);
delay(1000);
digitalWrite(kuning2, LOW);
digitalWrite(merah2, HIGH);

delay(200);

//transisi go   2
digitalWrite(kuning3, HIGH);
delay(1000);
digitalWrite(merah3, LOW);
digitalWrite(kuning3, LOW);

    //Kondisi lampu     3
digitalWrite(merah1, HIGH);
digitalWrite(merah2, HIGH);
digitalWrite(merah3, LOW);
digitalWrite(merah4, HIGH);

digitalWrite(kuning1, LOW);
digitalWrite(kuning2, LOW);
digitalWrite(kuning3, LOW);
digitalWrite(kuning4, LOW);

digitalWrite(hijau1, LOW);
digitalWrite(hijau2, LOW);
digitalWrite(hijau3, HIGH);
digitalWrite(hijau4, LOW);

delay(2000);

//transisi stop   3
digitalWrite(hijau3, LOW);
digitalWrite(kuning3, HIGH);
delay(1000);
digitalWrite(kuning3, LOW);
digitalWrite(merah3, HIGH);

delay(200);

//transisi go   3
digitalWrite(kuning4, HIGH);
delay(1000);
digitalWrite(merah4, LOW);
digitalWrite(kuning4, LOW);


    //Kondisi lampu     3
digitalWrite(merah1, HIGH);
digitalWrite(merah2, HIGH);
digitalWrite(merah3, HIGH);
digitalWrite(merah4, LOW);

digitalWrite(kuning1, LOW);
digitalWrite(kuning2, LOW);
digitalWrite(kuning3, LOW);
digitalWrite(kuning4, LOW);

digitalWrite(hijau1, LOW);
digitalWrite(hijau2, LOW);
digitalWrite(hijau3, LOW);
digitalWrite(hijau4, HIGH);

delay(2000);

//transisi stop   4
digitalWrite(hijau4, LOW);
digitalWrite(kuning4, HIGH);
delay(1000);
digitalWrite(kuning4, LOW);
digitalWrite(merah4, HIGH);

delay(200);

//transisi go   4
digitalWrite(kuning1, HIGH);
delay(1000);
digitalWrite(merah1, LOW);
digitalWrite(kuning1, LOW);

}